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Ranking The Best Marine Oil On The Market

Quicksilver 4-Stroke EFI Marine Oil

Red Line 40605 2-Stroke Race Oil

Lucas Oil Semi-Synthetic 2-Cycle Oil

If you want your boat’s engine to enjoy a long and productive life, you need to treat it with nothing less than the best marine oil that you can buy. Since your boat’s engine is the most important part of the vessel (aside from the hull, of course), it needs to be well taken care of and meticulously maintained. You can cut corners in a number of ways, but when it comes to your engine, don’t even think about it.

That means you should use a dedicated marine oil, and nothing else. As tempting as it might be to use the same oil that you’d use for you car, think again. Boat engines have very different oil specifications.

For a start, a marine engine requires an oil that can protect it from the effects of water, resisting rust and corrosion, and all the other problems that are caused by water. But that’s not all.

Marine engines operate differently too. They run harder and faster, often in the highest rev ranges. After that, they’re usually left alone for long stretches, unlike a car that’s used regularly. Dealing with these two extremes can take its toll on a boat engine, and that’s why you need specific marine products to keep your boat ship shape . And that goes for the engine too.

There are lots of different oils on the market, from two-stroke to four-stroke, with different weights and properties for a wide range of applications. So, to make life a little easier, we’ve drawn up a top list of the best boat oil products out there, with a buying guide to make sure that you buy the best oil for your engine. Here’s all you need to know.

Quicksilver’s all-inclusive 4-stroke oil and changing kit is a great choice for easy marine oil changes. It’s an inexpensive kit that’s simple to use, convenient in nature, and perfect for all marine 4-stroke engines However it has been made with Mercury Mariner engines in mind. It’s available in three different configurations, to suit different engine sizes. These sizes include engines from 25 hp to 30 hp, engines between 40 hp and 60 hp, and for engines between 75 hp and 115 hp.

The actual oil is a 25W-40 engine oil that has been formulated with a number of additives to provide extra engine protection. Some of these additives include Quicksilver’s Flagship Protection formula, which features anti-wear properties that increases crankshaft protection by up to 33%.

Each kit comes with a variety of essential oil changing tools, including a bottle of marine oil, a new oil filter, a drain plug seal, a handy drip tray, and clear and concise instructions.

If you’re looking for an affordable all-inclusive oil changing kit from a reputable brand, then this Quicksilver 4-Stroke EFI Marine Oil kit is worth the money. Make sure that you purchase the correct kit for your engine type though, and read the customer reviews to ensure that the supplied oil filter or fuel filter is compatible with your motor.

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$35.99 Bass Pro →
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Oil Type: 4-stroke Oil Weight: 25W-40 Certification: FC-W Bottle Size: 1 liter per kit (unless stated otherwise)

Next, we have another boat oil designed specifically for two-stroke motors. This is the 40605 race oil blend from Red Line. It’s a versatile oil that’s ideally suited to marine, motorcycle, ATV, and other powersports activities. This is a high-performance oil, and while it’s geared towards racing applications, it’s perfect for high-revving two-stroke marine motors.

This formula is a touch on the expensive side, but if you want the best performance out of your engine, with smooth running and top tier protection, this is worth the extra. It has been specially formulated for high-temperature stability, which is proven to produce gains and improvements of between 3 and 5 percent when compared with other oils.

In terms of protection, this marine oil can prevent the build-up of carbon around particularly susceptible areas of your engine, such as around the combustion chambers, piston rings, and exhaust ports. The result is an engine that can perform better, run smoother, and will last longer than others being serviced with other oils.

It burns clean, reduces smoking, and will help preserve your engine—and some of its perishables too, such as the spark plug and gaskets.

But performance like this isn’t cheap, and there’s no escaping the fact that this oil has a higher price tag than others. This is a great investment if you really want performance that sits at the business end of the spectrum. However, it might be overkill for the average boater.

Oil Type: 2-stroke Suitability: Oil injection and premix Certification: TC-W3 Bottle Size: 1 U.S gallon (3.78 liters)

Sierra 25W40 Boat Oil

If you’re looking for an inexpensive marine oil that’s designed and engineered to improve the performance and prolong the life of an inboard engine with outdrive propulsion, then this formula from Sierra offers excellent value for money.

This reliable 4-stroke engine oil has a viscosity of 25W-40, and it has been specially formulated for inboard and stern drive engines. Don’t make the mistake of confusing this with outdrive lubricant, because it’s not the right tool for the job. This marine oil is excellent for a range of other applications though.

Despite the fact that this is a cheaper product, it does have a number of premium features. The most talked about one (and arguably the biggest strength of this oil) is that it runs clean even in cold temperatures—an area that many other oils have been known to fail in.

It can also handle high horsepower engines and all of the wear and tear that inevitably goes with them, and it can also handle itself well in a marine environment, which can be undoing of some cheaper priced oils.

Again, it’s a cheaper oil, but it has all of the necessary certifications, including the most important NMMA (National Marine Manufacturers Association) FC-W one . It ticks all the right boxes, and won’t leave your wallet empty either. You even get quite a lot of it for your money too!

Oil Type: 4-stroke Oil Weight: 25W-40 Certification: FC-W Bottle Size: 5 U.S Quarts (4.7 liters)

Mercury 4-Stroke Marine Engine Oil

When it comes to marine engines Mercury know what they’re talking about. Mercury is one of the leading names in the industry, manufacturing quality marine engines. Whether you’re in the market for an outboard motor or an inboard engine, they’re a go-to brand. So it should come as no surprise that they manufacture their own line of engine oils and lubricants too.

This particular lubricant is a synthetic oil that has been developed specifically for four-stroke engines. It has a combination of synthetic blends and additives to provide the best lubrication and protection to gasoline engines. It successfully offers superior corrosions protection when compared with other boat engine oil products, which has made it one of the most highly recommended OEM marine oils in the business.

This is a 25W-40 synthetic blend oil designed for use in a wide range of marine applications, including outboard, stern drive, and inboard engines. It’s available in 1 gallon bottle sizes, which makes it ideal for your next boat engine oil change.

It’s ideally suited for high revving engines, but it also works very well for lower horsepower motors too. Though it’s a touch more expensive than other products on the market, this oil will improve your engine life and keep your maintenance costs down. Plus, despite the fact that it is often considered a premium product, it’s not actually that expensive either.

$41.99 Bass Pro →

Oil Type: 4-stroke Oil Weight: 25W-40 Certification: FC-W Bottle Size: 1 U.S gallon (3.78 liters)

For two-stroke marine oils, you should start your search by checking out what Lucas Oil has to offer. Lucas is one of the biggest names in the lubrication game. If it has an engine, you can bet that Lucas has an oil for it. For the best marine oil for 2-stroke engines, we’d recommend the Lucas Oil Semi-Synthetic 2-Cycle Oil for consideration.

This oil has a unique blend that helps transform it into an environmentally conscious lubricant. Or at least as environmentally-conscious as an oil can be . It has a smokeless nature, which allows it to burn much cleaner than other oils, and it also boats a low ash production. Since it’s greener than other products, it makes it a far superior choice for marine applications.

It’s not just environmentally-sound either. It also offers excellent performance and increased protection, particularly for air-cooled engines. The formula is ideal for preventing carbon deposits from building up around piston rings, and inside your combustion chambers. It prevents rust, corrosion, and promises to keep your engine running better, for longer.

Naturally, this oil conforms to all regulations. It’s ISO GD and JASO FC approved, and meets and exceeds both API TC and FD standards. It’s a versatile product that can be used in two-stroke engines that are either direct oil injection or where premixing is necessary.

What’s more, this oil can actually be used for your two-stroke motorcycle too, should you have one in the garage. This makes it quite a versatile purchase. Take note though: it’s not the best choice for mixing into your weed whacker or other outdoor power tools.

The Best Marine Oil: A Buying Guide

While all engines are similar in nature, they have very different needs. Giant diesel engines have a different oil specification than a small outboard engine would, and what’s good for a fishing boat probably won’t be ideal for a high-performance power boat. The moral of the story is this: there’s no one-size fits all boat oil—not if you want decent results anyway.

Understanding how your boat engine works and what it has been designed for is key to finding the best oil for the job. While boat motors share similar DNA to engines found on land-going vehicles, such as their need for lubrication, and protection, there are some key differences. For example, marine vehicles are often in contact with water, salt, and other potentially troublesome materials, and it’s because of this that they often need specialized protection from their motor oils.

But before we get to that part, let’s look at some of the most important things to look out for when buying new oil for you boat.

Two-Stroke Or Four?

Marine gasoline engines come in two distinct flavors: two-stroke, and four-stroke. The different engine types have different pros and cons , but we’re not here to go into detail about that. When it come to lubrication, they have major differences.

Two-stroke engines don’t have a separate lubrication system. The oil and fuel are mixed, consumed, and burned together. The oil can be injected from a separate reservoir directly into the combustion chamber, or it can be premixed in the fuel tank. This lubricated the engine as it’s used.

Four-stroke engines have a similar lubrication system that you’d find on your car. It’s a separate, self-contained system that requires you to add oil to an oil tank, which is then routed to where it needs to go. The oil isn’t spent and consumed along with the fuel.

You should be aware of what kind of engine you have. Two-strokes are generally quite noisy and exhaust noticeable blue smoke. Four-strokes are quieter and appear to burn cleaner. At this point, if you’re still not sure what type of engine you have, you probably shouldn’t be changing your own oil.

Viscosity Level

For the best results, always follow your manufacturer guidelines. Four-stroke oil will come with a viscosity level, or oil weight, printed on the bottle. It’s always recommended that you follow your manufacturer’s advice. So, if they recommend an oil with a weight of 25W-40, then you should use an oil with the same specification.

But what does that number mean?

In short, viscosity is a fluid’s resistance to flow; in this case, the viscosity is rated at two different temperatures, since oil thickens as it cools and thins as it heats. The first number is the viscosity rating that an oil has a zero degrees Fahrenheit. It’s designated with a “W” which stands for “Winter.” The second number is the oil’s viscosity at a much higher temperature, at 212 degrees Fahrenheit, to be precise. As oil gets thinner, it’s not as useful. So, a higher second number is generally better.

That’s a very simple explanation though. For the best results, we recommend that you follow the oil requirements that your manufacturer suggests.

Apart from viscosity and lubrication, there are a number of other useful features that motor oil can do. The most important one is protecting your components from damage, and extending an engine’s lifespan. Marine engines are particularly vulnerable to rust and corrosion thanks to the wet and humid conditions that they have to operate in, but with the right oil and the right blend of additives, they can be kept at bay. Almost all marine oils will have some kind of rust-protection requirement.

Look for oils that have additives and inhibitors that have been specifically engineered to stave off rust, prevent carbon build-ups, and stop corrosion in its tracks. Rust, corrosion, and excess carbon can lead to catastrophic engine failures.

Lastly, there’s the price. There are many boaters out there who will preach that oil is oil, and the differences between one brand and another are negligible. They would be right, to a degree. Any oil is better than no oil—we can all agree on that. However, those lubricants that have been specially engineered to inhibit engine wear are definitely worth paying more for.

More expensive, advanced oils will cost more, but they should extend times between maintenance. Whether you pay more for longer maintenance intervals, or pay less for oil but have to change it more often, that’s up to you. Just make sure you oil those engines!

Joe Appleton is an outdoor enthusiast who loves everything from bushcraft and hiking to wild camping and boating. If he’s not out in the woods, you’ll find him out on the water.

Categories : Reviews

Arthur on December 14, 2020

I use Marine outboard TCW3 in my vehicles at 1oz per 5 gallons of gasoline. That 640:1. Over four years now with no problems and vehicles run great.

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Best Motor Oil for Your Boat’s Engine

Post author: Trey
Post published: June 27, 2019
Post category: Boat / Marine

Boat motors are expensive, so using the best marine motor oil is critical to protecting it in the harsh environments they operate in.

Have you ever really thought about the differences in how your boat’s engine is used compared to your car’s engine? Do you know why it’s important to understand these differences, so you can choose the best oil? This article will talk to you about some of these differences and introduce you to the best synthetic motor oils on the marine market, manufactured by AMSOIL.

Download a Factory Catalog

What’s different.

The wet and sometimes salty environment it operates in, the amount of use it gets, high RPM’s and constant load are just a few. Compared to your car’s engine, these are some of the harshest environments that can be encountered. Add to this list, that maintenance is usually not at the top of the priority list. So, when you choose an oil for your boats engine, using one that is designed to give you the best protections in those conditions is a must.

Whats high stress

Consider that a marine engine powering a boat at 30 mph runs about 5,000 rpm. In contrast, an automotive engine powering a car at 60 mph runs about 2,000 rpm. This higher stress causes traditional oils to break down and lose viscosity. This leads to deposit formation, reduced power and eventually engine failure.

How does rust come into play

Due to constant exposure to humid, wet environments, marine engines are prone to rust and corrosion. Rust on engine parts acts like sandpaper, scouring bearings, the cylinder wall, piston rings and other components, while aluminum pistons and other parts can corrode. Rust and corrosion reduce engine power and eventually cause catastrophic failure. Rust protection is not natural to motor oil; it comes only by design from the additives added to it.

When a marine engine sits in storage for the winter season, all the acids and water introduce to the oils can lead to rust formation on the internal parts. When the engine starts up again, damage will caused to the cylinders and bearings. Extending your rust protection to the off season comes into play.

Results of the Marine oil E-TEC engine study.

Who makes oils

Reading a recent article about marine engine oils, I had to laugh when the author started talking about engine makers formulating oils. Engine makers don’t formulate motor oils, the oil manufacture’s formulate oils. Just as designing engines to meet the newest standards is a continuous process with lots engineering and testing, Formulating oil to meet the latest standards in a variety of operating environments takes the same amount of engineering and testing. On top of all that goes into developing oils, testing oils is expensive and ongoing. Most people don’t understand that every time and oil formulation is adjusted, it must go through the tests all over agin to be re-certified.

Who makes the standards

The National Marine Manufacturers Association (NMMA) developed the standards and testing procedures for certification for Marine Engine Oils. These certifications are FC-W, FC-W (CAT) and the TC-W3. The goal of these oil certifications is to reduce emissions, increase fuel mileage and design oils specifically for the marine environment.

Here is a link to the NMMA if you want to read more about them.

Fc-w and fc-w (cat).

These oils are designed for the 4 stroke marine engines being produced. The FC-W (CAT) category is for the newest marine engine technology that has exhaust after treatments to further reduce emissions. These FC-W (CAT) oils are catalyst compatible.

Four Stroke Marine Oil Certification Testing

Who develops the tests and what are they testing for? Directly from the NMMA site: “Working with the NMMA, industry leaders in lubrication technology developed testing criteria for this marine four-stroke oil. These criteria include bench tests for viscosity, corrosion, filter plugging, foaming and aeration. In addition, the oil must successfully pass a 100-hour general performance engine test.”

The FC-W (CAT) certification takes into account the need to protect the catalyst in marine engines with exhaust after-treatments in addition to all the normal performance criteria of the FC-W oils.

TC-W3

Two stoke oils lubricates engine parts as it passes through the engine and is burned off with the fuel. Two stoke oils can be either mixed with fuel or injected in to the combustion chamber with the fuel. The long term goals for two stroke engines have been to reduce the amount of oil used in mixes and to reduce the amount of emissions containing the unburnt oil while increasing engine life.

As two stroke engines continue to move to higher cylinder temperatures and increased compression ratios to improve performance, it’s critical to use oils that meet TC-W3 specs.

How are TC-W3 oils tested

From the NMMA, “The TC-W3® oil standard is a performance-based qualification program. The requirements include various bench tests for fluidity, miscibility, rust, compatibility, etc., as well as engine tests to evaluate the prevention of ring sticking and carbon buildup on pistons and other engine parts. The engine tests include one Johnson 40 hp and two consecutive Mercury 15 hp tests, all of which are run under severe conditions for 100 hours each. Two additional engine tests are also conducted to ensure a high level of lubricity performance.”

Why is this important

These specific tests and criteria are needed because of the high loads, high speed, exposure to high levels of humidity and salt water found with marine engines. Most standard oil tests don’t work for these conditions. So tests for oils specific for the marine environment are important for the current and future development of marine oils.

Why use AMSOIL marine motor oils

AMSOIL is known as the leader in the Synthetic Motor oils. They have been developing, producing and pushing the limits of synthetic motor oils for over 45 years. They take their research and real world data from their involvement in automotive, racing, marine and other industries to improve all their products. Now, AMSOIL also has research from one of the most demanding industries, Wind Turbine gear box oil, to add to their line up. In addition to all the testing for API/NMMA and other industry certifications, AMSOIL has independent lab testing and conducts real world field studies of its products in use. They then publish the results of these studies for everyone to read.

Results of the Marine E-TRC engine study.

Why this matters to you the marine engine owner

AMSOIL is the Factory Fill in over 50% of the gear boxes world wide for wind turbines. When one of these gear boxes fail, it costs over $500,000 to repair or replace. AMSOIL has had such great success in this market with reducing failures, that they are in talks to increase the number of factory fills they do. What this does is gives AMSOIL amazing research and data, in one of the most demanding operating environments, to apply to the other oils they manufacture for other industries. The harsh operating environments of marine engines being one of those other industries.

What marine oils are available from AMSOIL

For Four Stroke Marine Engines AMSOIL has Synthetic marine oils that provide the highest wear protection and great rust prevention for the high stress, high RPM and wet conditions of marine engines. These protections last well into the storage season was well.

AMSOIL 10W-30 Synthetic Marine Engine Oil

Nmma fc-w (cat) certified.

Is a premium synthetic formulation designed to withstand the heat and stress of high-rpm operation and deliver excellent wear protection. It protects against rust and corrosion during periods of inactivity and long-term storage to keep your engine protected, even when it’s not running.

Applications include: Gasoline-fueled four-stroke inboards, outboards, inboard/outboards and personal watercraft, including those made by Honda*, Mercury*, Yamaha*, Johnson/Evinrude*, Bombardier/BRP*, Suzuki*, Nissan*, Tohatsu*, OMC*, Volvo-Penta*, Mercruiser*, Chevrolet* and Ford*.

Buy 10-W30 Marine engine oil here

AMSOIL 10W-40 Synthetic Marine Engine Oil

Buy 10W-40 Marine engine oil here

25W-40 Synthetic Blend Marine Engine Oil

Fc-w (cat)® certified.

Is designed with excellent shear stability to deliver a consistent lubricating film. It helps guard engine components from wear for maximum life. It is fortified with potent inhibitors that guard against damaging rust and corrosion.

Applications : Use in gasoline-fueled four-stroke inboards, outboards, stern-drives (inboard/outboards) and PWC that require any of the specifications, including those made by Mercury* and Mercruiser*.

Buy 25-W40 Marine engine oil here

For two stroke equipment.

AMSOIL Specifically designed for outboard motors, 2-Stroke Oil containing a heavy dose of low-temperature dispersant additives that excel at reducing varnish, carbon and deposit formation in water-cooled motors. They have low-smoke, low-odor, low-toxicity properties that produce fewer emissions, thus benefitting operators and the environment.

Outboard 100:1 Pre-Mix Synthetic 2-Stroke Oil

Designed for pre-mix applications as lean as 100:1 ratios or richer. Improves throttle response and lowers or eliminates smoke. Minimizes deposit formation and lowers emissions. Performance emphasis on the cooler operations of water-cooled motors.

Applications include: pre-mix use in two-stroke outboard motors, personal watercraft and jet boats that specify TC-W3. For maximum performance, mix with gasoline at 100:1 regardless of the mix ratio specified for the equipment. Richer mix ratios may be used where desired.

Buy Outboard 100:1 Pre-Mix Synthetic 2-Stroke Oil here

Hp marine synthetic 2-stroke oil.

Excellent for Evinrude® E-TEC™ factory-lean setting (replaces Evinrude XD100™ 2-Cycle Oil). Helps prevent deposits, protects against wear, has low smoke, protects against rust and has low aquatic toxicity. Superior performance as an injection oil or at 50:1 pre-mix.

Applications include: Use in two-stroke marine applications that specify TC-W3, including those made by: Johnson/Evinrude*, FICHT*, E-TEC*, Mercury* EFI & Optimax*, Yamaha*, Nissan*, Tohatsu* TLDI*, Suzuki*, Mariner*, Force*. Use as injection oil or 50:1 premix (2.6 oz. per U.S. gallon of gas).

Buy HP Marine Synthetic 2-Stroke Oil here

As you can see AMSOIL, who has been a leader in all markets of synthetic motor oils, makes products for all manufacturers of two stroke and four stroke marine engines. These oils give you the best wear protection, rust prevention and longest lasting engines in the marine environment. All of these oils are backed by AMSOIL’s industry leading warranty.

You can also save up to 25% as a preferred customer .

Download a full product catalog, learn more about all amsoil synthetic oil products, check us out at the synthetic oil depot.

***We remind you that it’s a violation of US Federal law for boat, engine and other power sport manufacturer’s to void your warranty or threaten your warranty for using the products you choose to use.

Where can i buy amsoil products.

AMSOIL Oil Filters Are the Best On The Market

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How To Change Boat Engine Oil

Make your routine fluid changes as painless as possible.

With any maintenance procedure, the easier it is to do, the more likely it is to get done. So rather than put off changing your engine oil or transmission fluid, take a few moments to master the procedure so you'll stop dreading it in the future. Such tasks are necessary, of course, to keep your systems running, but routine fluid changes can also provide opportunities to spot signs of potential problems, such as wear or contamination, before they can morph into catastrophic failure — and equally catastrophic repair bills.

Engine Oil: Inboard And (Four-stroke) Outboard

Engine manufacturers recommend engine-oil changes after every 100 hours of use, or annually, at a minimum. Diesel engines tend to be harder on oil than gas engines, one of the reasons that many experts recommend changing diesel oil every 50 hours rather than the 100 hours commonly quoted. In addition to your normal oil-changing preparations (purchasing the correct type and amount of oil, gathering the necessary tools), place catch pans and oil-absorbent pads beneath the engine and oil filter before starting. This adds an extra layer of protection to keep accidental spills from reaching the bilge.

Bring the engine up to operating temperature before changing the oil. Warm oil not only drains easier but also holds more contaminants in suspension, meaning that more abrasive gunk and chemical impurities will be removed from the engine when the oil is changed. Unlike on your car, inboard marine-engine installations typically provide little or no access to the oil-pan drain plug or enough space below the engine to place an open container to catch the draining oil. Therefore, most installations will require use of an oil-evacuation system, one that uses a manual or electric pump to transfer oil from the engine into a separate container. Oil-evacuation systems range from portable, manual, or electric vacuum pumps designed to remove oil via the dipstick tube to permanently mounted pumps plumbed directly to the oil-pan drain.

Using a portable extractor pump (via the dipstick hole) is also the preferred method for removing oil from a four-stroke outboard. The drain plug for a four-stoke engine is accessible, but it's so messy to use, due to its location, that the extractor pump is hands down the better way to go.

Part of your oil-changing routine should be inspecting the old oil once it's drained. Oil that's milky in appearance is an indication that water, antifreeze, or fuel is present, which could mean anything from a blown gasket to a cracked block. Rub a little engine oil between your fingers. If it feels abrasive or has a burnt odor, be concerned about bearing wear, although it could also simply mean that the oil hasn't been changed in a while.

Oil Sampling

Sending an oil sample to a lab for testing is more scientific than a visual inspection, but it's most useful for tracking issues over the engine's lifetime rather than for spot-checking. Still, a one-shot oil analysis can show unusual wear and the presence of water, antifreeze, or diesel fuel. Think of it as a blood test for the engine — one that may not predict a heart attack but can indicate a risk factor such as high cholesterol. For more on oil sampling, see " Oil Sample Analysis ".

Engine-oil changes should always include the installation of a new oil filter. Drip-free filter replacement can be challenging, though, so you'll want to place oil pads or a catch pan beneath the filter before you remove it. Another option is placing a large zip-top bag around the filter during removal. Once the filter is removed, the bag can then be sealed and used to transport the filter, further reducing the chance of spills.

Always contain and dispose of waste oil and fluids properly. Your marina likely has a disposal or recycling program available, but there are other options — many automotive-parts stores maintain a waste-oil recycling station as well. Store waste fluids separately until they can be properly disposed of. Mixing fluids can make recycling impossible and create a veritable Hell's Broth that's even more toxic (and difficult) to dispose of.

Once the old oil is drained and the new filter installed, the next step is adding new oil. Using a funnel will make adding oil easier in almost all cases — you can even add a short length of hose to the funnel to assist with those hard-to-reach oil fills. Once the proper amount of oil is added, start the engine and look for leaks, particularly around the oil pan and filter. Top up if needed because the new filter is now filled. Keeping a fresh oil-absorbent pad beneath the engine will aid in spotting leaks both after and between oil changes.

The specific steps for your outboard will be outlined in your manual, but the basic process is: Drain, Change, Replace, Fill.

1. Drain the old. This Suzuki has a drain plug you can access easily. Other models will require an oil extractor that goes through the dipstick.

2. Allow the oil to drain into a catch pan.

3. Change the oil filter. On this engine, part of the cowling needs to come off to get at the oil filter.

4. Remove the old filter carefully to minimize spills.

5. Replace with a new filter. Lube the O-ring at the top with a bit of new oil. Replace the drain plug if you removed it.

6. Add new engine oil. The amount and type are specified in your manual.

7 Tips For Easier Oil Changes

1. Always warm the engine before changing the oil.

2. Use a closed oil-changing system whenever possible. It's simple to use, reduces the chance of spills, and makes it easier to transport used oil to a recycling facility.

3. When changing your engine's oil filter, wrap the filter with a thick cloth during removal to avoid burning your hands. Write the date and engine hours on the new filter to serve as a visual reminder of when the next oil change is due.

4. Use oil-absorbent pads and containers to prevent and contain accidental spills.

5. Temporarily disable automatic bilge pumps to prevent oil from accidentally being pumped overboard in the event of a spill.

6. Recycle used oil and filters.

7. Dispose of used absorbent pads and rags properly.

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Frank Lanier

Contributing Editor, BoatUS Magazine

Capt. Frank Lanier is a SAMS Accredited Marine Surveyor with more than 40 years of experience in the marine and diving industries. He’s also an author, public speaker, and multiple award-winning journalist whose articles on boat maintenance, repair, and seamanship appear regularly in numerous marine publications worldwide. He can be reached via his YouTube channel “Everything Boats with Capt. Frank Lanier” and website captfklanier.com.

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Best Motor Oils For 2023

Think of motor oil as cheap insurance. Regular oil changes prevent the buildup of carbon and sludge, extending engine life. Guarding against thousands of dollars in damage for the relatively tiny cost of oil changes is a no-brainer, but what makes one engine oil better than the rest?

Oil creates a protective film between an engine’s moving parts, which rotate or move thousands of times every minute. In this razor-thin space where every molecule counts, an engine oil’s distinctive additives enable oil to give protection with minimal resistance. The less drag on the engine’s moving parts, the more power and fuel economy are realized. For the oil itself, the longer it maintains its chemical stability, the longer it can effectively protect against friction.

Each oil brand closely guards their proprietary chemical formulas as a trade secret, with promises to protect longer, better and across a wider range of environmental conditions. The one that’s right for your vehicle can vary just as much, as different engines, driving habits, and vehicle uses call for different solutions. We chose five outstanding engine oils known to deliver reliable protection at a great price. Each is suited for a specific application.

Mobil 1 Extended Performance : Best Advanced Synthetic Motor Oil
AmazonBasics Full Synthetic High Mileage Motor Oil : Best Budget Synthetic Motor Oil
Castrol GTX : Best Conventional Motor Oil
Shell Rotella T6 Diesel Engine Oil : Best Diesel Motor Oil
Quaker State Synthetic Blend : Best “Get-it-Home” Motor Oil

As synthetic motor oils go, Mobil 1 is the industry benchmark. Well-regarded for its detergent qualities, Mobil 1 has been the factory-fill choice for high-performance engines for decades. The Extended Performance formulation is designed to protect for up to 20,000 miles under optimal driving conditions. Prices have steadily fallen as it’s become more popular, making Mobil 1 Extended Performance our top choice for the best overall value among engine oils.

Demonstrated track record of dependability
Factory recommended in many cases
Low price, extended service interval
More expensive than other synthetics
Even longer lasting annual protection formula now discontinued
Stick to and trust your maintenance schedule rather than relying on the formula

AmazonBasics Full Synthetic High Mileage Motor Oil

Yes, Amazon does sell its own brand of synthetic motor oil, and it’s a cost-effective solution most users like. Though it isn’t a familiar brand name, most viscosities sold under Amazon’s label conform to General Motors’ DexOS standard. Many automakers have adopted this standard as an assurance of an engine oil’s protective and detergent properties and DexOS-rated oils meet a host of engineering benchmarks and are monitored for quality. When ordering, look for the DexOS symbol on the front of the bottle to verify the oil meets this standard. We only recommend DexOS-rated oils.

Demonstrated quality
Long service life
Not all viscosities are DexOS-rated
Unknown brand
Not that much cheaper than name-brand synthetic oils

As the cost of synthetic oil drops closer to conventional oil, remember that some engines are still better suited to conventional oils. Older vehicles or engines that have run on conventional oil for hundreds of thousands of miles may need the specific additives included in conventional oils to prevent leaking seals. Rotary engines in particular require conventional oil, and Mazda specifically recommends against using synthetic oil in models like the RX-7 and RX-8. Castrol GTX is a high-quality conventional oil that helps keep older engines healthy and, when it does enter the combustion chamber because of worn rings or seals, burns fairly cleanly, protecting spark plugs from premature fouling.

Reputation for quality
Keeps older engine seals healthy, burns cleanly if it does get past rings or seals
Formulated to protect against sludge
Doesn’t respond to temperature variations as consistently as synthetics
Shorter service life than synthetics
Limited number of weights available

Diesel engines often work harder, longer hours than their gasoline counterparts, whether it’s a truck towing a heavy load or a long-range diesel car driving for hours on end without stopping. Extended heat cycles, longer service intervals and the sheer expense of a diesel oil change make it important to choose a high-quality oil. Shell Rotella has a higher pour point than some other oils, the temperature at which the oil loses its flow properties, which means it’s less likely to leak from worn seals or older engines. One tip: for trucks that require large quantities, a bulk three-gallon pack isn’t always cheaper than buying individual gallons.

Strong reputation in agricultural and trucking industries
Higher pour point slows small leaks
Mail-in rebates often offer considerable savings
Buying the big sizes isn’t always cheaper than buying by the gallon
Higher pour point can impact flow in cold temperatures
Popular truck viscosities are pricey

Sometimes, you just need to get home. For engine flushes or other situations where budget is the primary concern, Quaker State makes a synthetic blend that’s cheaper than even some conventional oils. Unlike no-name products, Quaker State is a well-known brand with consistent quality control standards and a staple in many auto dealers’ oil change specials. Synthetic blend oils deliver more consistent viscosity changes in response to temperature variations than conventional oil, suiting them to climates with moderate temperature swings.

Name-brand quality and consistency
Budget price
Better suited to temperature changes than conventional oil
Bargain price only applies to certain viscosities
Not DexOS rated
Basic oil without additives geared toward high mileage applications

METHODOLOGY

We specifically chose highly-rated and readily available motor oils that are compatible with a wide range of vehicle makes and models on the road today. Forbes Wheels considered the products that are the most accessible to consumers residing throughout the U.S. and selected five types of motor oil by considering a broad range of end-user ratings and professional evaluations, including our own experiences using these products. We rate all motor oils based on the following weighted metrics:

Quality (35%)
Durability (30%)
Vehicle compatibility (20% )
Protection from wear and sludge (15%)

Conventional vs. Synthetic Oil

Synthetic and conventional oil both start life as crude oil. Conventional oils use additives to achieve the desired viscosity range, but when those additives deteriorate, the oil’s ability to adapt to changing temperatures is diminished. Synthetic oils are created by breaking down crude oil on the molecular level and rebuilding them to a specific innate and uniform structure, which nearly eliminates deterioration. However, because engine oil naturally absorbs harmful particles such as dirt, carbon and metal shavings, it’s still important to regularly change the oil and filter.

Synthetic tends to stand the test of time much better than conventional oil. Cost used to be the biggest disadvantage of synthetic oil, but as automakers require the use of synthetic oil in most new modern vehicles, prices have fallen. Synthetic oil is generally better at protecting engines and retains its chemical properties longer than conventional oil, but it doesn’t burn as well if it ends up in the combustion chamber, which can happen on older vehicles with worn seals or piston rings. While synthetic oil won’t degrade seals, it is thinner than conventional oil and may pass more easily through existing worn seals or leaks which can exacerbate the underlying issues.

Top-Rated Synthetic Oils for Protecting Your Car's Engine

Car manufacturers use these oils in their most powerful engines to ensure their reliability. Which is the best choice for your car?

Engine oil has evolved from a simple brown goo refined from crude oil to a brilliantly engineered, meticulously developed blend of refined petroleum and sophisticated additives that retains its protective properties through many months and thousands of miles of hard driving. Today’s highest-performing, longest-lasting engine oils are synthetics, which are typically engineered and manufactured from chemically modified petroleum components. What are the best synthetic oils?

Top-rated Synthetic Oils

Great for Hi-Po Engines

Amsoil amsoil signature series 5w-30 motor oil.

Best for Older American Cars

Valvoline valvoline full synthetic high mileage with maxlife technology 5w-30 motor oil.

Best for 2nd Oil Changes

Royal purple royal purple api-licensed 0w-20 high performance synthetic motor oil.

Best for F-150s

Ford motorcraft synthetic blend 5w-30.

Best for McLarens, Porsches, and Corvettes

Mobil 1 mobil 1's 0w-40 synthetic.

Great for Harleys and Jeeps

Lucas oil lucas oil synthetic 5w-30 high performance motor oil.

Best for Cold-Weather Vehicles

Red line red line 5w-30 full synthetic ester formula car engine oil.

Best for Chargers and Challengers

Pennzoil pennzoil ultra platinum 0w-40.

Best for Mustangs

Ford motorcraft full synthetic 5w-50.

Best for Ford GT

Castrol castrol edge supercar 5w-50, how we chose the oils on this list.

[In May 2022, we added a few top-rated OEM and aftermarket synthetic oils to the bottom of this list.—Ed.]

When to Change Your Oil

Car and Driver suggests regular oil changes according to manufacturer recommendations, with the same brand and SAE (Society of Automotive Engineers) viscosity as the factory fill. Not all the synthetics here will be available in the viscosity recommended by your car's manufacturer. Not to worry. The use of the oils on this list by carmakers in their highest-performance engines indicates that they're all among the best you can buy . Because some oils are available in multiple formulations, check to be sure the one you're buying is designated for your particular vehicle. You can find that information in your owner's manual and, often, under the hood of your vehicle.

Advantages of Synthetic Oil

Synthetic oil has some advantages over regular motor oil, especially if you drive an older car, make a lot of short trips, and/or drive in an area with very hot or very cold seasonal changes. Synthetics can:

Resist breakdown
Withstanding higher temperatures
Flow better in cold temperatures

Q: What's the difference between synthetic oil and regular motor oil?

A: Regular motor oil is a naturally occurring compound. Synthetic oils combine synthetic or artificial chemicals with crude oil to create a petroleum product that behaves similarly to conventional oil.

Q: Is synthetic oil really better than regular motor oil?

A: Generally, yes. Unlike regular car oil, synthetic oil is more refined, which can lower friction, reduce engine sludge, and increase engine performance. If you drive a high-performance vehicle, live in an area with extreme temperature conditions, make a lot of short trips, or drive an older car that tends to burn through oil quickly, a synthetic oil will last longer and protect your engine better.

Q: How many miles can you go on synthetic oil?

A: Depends on where, how, and what you drive. Most car (and oil) manufacturers recommend you change synthetic oil every 7,500 to 15,000 miles, depending on the vehicle and the type of synthetic oil used.

Q: Are there any disadvantages to synthetic oil?

A: The only real downside of synthetic oil is the cost, generally two to four times the price of conventional oil.

Q: What happens if you mix synthetic oil with regular oil?

A: Conventional and synthetic oils are mainly made up of compatible components, so while you can safely mix synthetic and conventional oils, it's not recommended—all you're doing is diluting the performance of the synthetic oil.

Top-Rated Synthetic Oils:

Designed for today's high-performance engines.

From one of the OG motor-oil brands, this synthetic oil is great for use in most domestic cars with 75,000-plus miles.

Royal Purple's API-licensed motor oil delivers superior protection and can improve performance in gasoline and diesel engines.

Motorcraft Synthetic Blend 5W-30 is used in:

• Ford F-150 Raptor

Mobil 1 Advanced Full Synthetic 0W-40 is used in:

McLaren 570, 600LT, 720S, Senna
Porsche 911, 718 Boxster, 718 Cayman, Panamera, Cayenne, Macan
Chevrolet Corvette Stingray, Z06, ZR1 (Note: There are multiple formulations of Mobil 1 oil. The version pictured here is labeled European Car Formula. The Mobil 1 for Corvettes carries a Dexos designation, which means it meets GM's particular specifications. Check your owner's manual to see whether the manufacturer requires a specific version of Mobil 1 for your vehicle.)

A blend of synthetic base stocks and a high-performance additive package.

Great for passenger cars, light trucks, performance vehicles, and even marine applications.

Pennzoil Ultra Platinum Full Synthetic 0W-40 is used in :

• Dodge Charger SRT, SRT Hellcat

• Dodge Challenger SRT, SRT Hellcat, SRT Demon

Motorcraft Full Synthetic 5W-50 is used in:

• Ford Mustang Shelby GT350, GT350R

Castrol Edge Supercar 5w-50 is used in :

• Ford GT (Note: This oil is currently not available at retail in the U.S. in this viscosity, but is available in the pictured 10W-60 viscosity.)

K&N K&N Ultra Premium 0W-20 Full Synthetic Engine Oil

Designed to minimize contaminants and sludge buildup.

Shell Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil

Ideal for on-highway fleets, construction and agricultural machinery, and diesel pickup trucks.

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IT'S MORE THAN JUST OIL. IT'S LIQUID ENGINEERING.

MOTOR OIL & FLUIDS
ENGINE OILS

Types Of Motor Oil & Lubricants

Knowing the different kinds of motor oil to use is essential if you're going to get every oil change right. We've made it quick and easy with our Oil Selector tool.

Which Castrol Oil Is Best For My Car?

When it's time for an oil change, knowing what motor oil to use is essential. The answer to that question gets more complex every day. The latest engines are getting smaller and more powerful all the time, and manufacturers are specifying complex full synthetic oils to cope with higher engine pressures and meet fuel efficiency targets.

If you're driving a muscle car or a European import, the manufacturer may well specify a full synthetic motor oil. Alternatively if youre driving an older domestic vehicle, the manufacturer may recommend a conventional oil. However, even though that's the most economical option, a full synthetic will almost certainly look after your engine better. Knowing what engine oil to use at every oil change is essential.

Your owners manual will tell you which industry specification, type and grade of oil the manufacturer specifies, and we've also made it quick and easy to see all your options and make the right choice with our Oil Selector tool . Try it now.

What Does Engine Oil Viscosity Mean?

Viscosity is a measurement of the thickness and 'ease of flow' in any liquid. For example, water is a thin liquid that flows freely, so we say that it has a low viscosity. Honey, on the other hand, is relatively thick and flows more slowly. So we describe honey as having a high viscosity. It's also worth noting that honey flows more easily - and is therefore less viscous - when it is slightly warm. Motor oil behaves in pretty much the same way, which is why mechanics will usually run an engine for a minute or two before draining used motor oil away to replace it.

To view our Oil Viscosity chart and learn more, check out our full guide.

What is Viscosity?

What Type Of Motor Oil To Choose

There are so many motor oils out there, which oil type is right for your vehicle? Well, there are three basic types: mineral, semi synthetic blend and full synthetic. Mineral oils are the least refined of the three, which means they cost less, but also provide less protection, performance and economy than the other options. Part synthetic motor oils are a blend of mineral oil and synthetic oil, to give added performance, but still at a lower cost than full synthetic motor oils. Full synthetics are the most expensive motor oils as they are highly refined, but offer the best protection and economy to absolutely every vehicle.

To learn more about Synthetic Motor Oil , check out our full guide.

Castrol Engine Oil Brands

Castrol EDGE

CASTROL GTX FULL SYNTHETIC

Castrol® GTX®

Full synthetic motor oils.

Modern day engines are smaller but more powerful than ever, operating at more than twice the internal pressure of older engines. Castrol® EDGE® is our strongest motor oil, fully synthetic and liquid engineered with Fluid Titanium Technology to make it strong enough to handle the demands of today's engines at all times.

CASTROL EDGE EXTENDED PERFORMANCE

Castrol EDGE Extended Performance with Fluid Titanium Technology provides unsurpassed protection for critical engine parts, ensuring optimal performance.

Synthetic Blend Oil

CASTROL GTX ULTRACLEAN

Sludge, varnish and carbon can build up in your engine, reducing engine life, power output and fuel economy. Castrol® GTX® ULTRACLEAN has a double-action formula that cleans away sludge and prevents new sludge from forming. It provides 45% better sludge protection than is demanded by tough industry standards.

Castrol GTX HIGH MILEAGE

Castrol® GTX® High Mileage Motor Oil has been liquid engineered specifically for vehicles with more than 75,000 miles on the odometer. Not only does it protect against sludge, wear and burn-off, it features Phosphorous Replacement Technology to help protect your car's emission system from catalytic converter failure.

Conventional Motor Oil

Castrol GTX

Sludge can form in engine oilways, blocking them up to reduce power and engine life. Castrol® GTX® is a premium conventional motor oil that has been helping to extend engine life since 1968. It does so thanks to a double-action formula that cleans away old sludge and prevents new sludge from forming.

Castrol GTX Diesel

Diesel engines are designed to last for more miles and deliver better mileage along the way. But they can only do that with regular oil changes and the right diesel oil formulation. Castrol® GTX® Diesel is liquid engineered to fight sludge, protect particulate filters and preserve engine efficiency.

Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. Reviews ethics statement

Best Engine Oil for 2022

These best motor oils will help protect your engine and keep it running smoothly all year long, no matter your budget.

Choosing the right motor oil is paramount to car maintenance . It's not a particularly exciting task, whether shopping for or changing your oil, but if you don't pay the proper attention, then you aren't going anywhere. And of course, your car could end up damaged , just by ignoring or not being careful with the simplest of tasks. That's why spending the time to pick out the right oil is so important.

Motor oil works by creating a thin barrier between your engine's moving parts to reduce wear and resistance. The more smoothly all those parts move, the more efficiently an engine operates. There are a mind-boggling number of options that will do the job, so we've sorted through them all to find the best motor oils for a variety of needs.

We considered price, availability, personal experience and consumer reviews in choosing these top picks. We also included conventional oil, synthetic oil and synthetic blend oils, so no matter your preference, there's a motor oil on this list to fit your needs. After checking out the list, make sure to read on afterwards to learn more about the different types of oil and tips for picking the one that's right for your ride.

Read more : Best Penetrating Oil for Cars in 2022

Mobil 1 Extended Performance motor oil

Best engine oil overall.

The best engine oil overall is a synthetic oil that's highly regarded for its ability to not only protect your vehicle's engine but also for its excellent cleaning capabilities. It's formulated with special additives that make it well-suited for people who often drive in dirtier environments either off-road or in cities. This synthetic motor oil performs well in both high temperature and cold temperature environments and is long-lasting with a life of up to 20,000 miles between engine oil changes.

Castrol GTX Magnatec motor oil

Best engine oil overall runner-up.

If you're looking for a reliable synthetic motor oil, then Castrol has you covered. This affordable synthetic engine oil option is designed to reduce engine wear leaving engine parts up to four times smoother through molecules that stick to the engine. Even when the engine is turned off, those molecules in the GTX Magnatec engine oil remain in place. This helps protect your engine while it's warming up, which is where most engine wear happens.

Pennzoil Ultra Platinum full synthetic motor oil

Best synthetic engine oil.

This high-performance Pennzoil Platinum motor oil offers extended performance life and is the first motor oil made from natural gas rather than crude oil. It's designed to maintain its performance even in extreme temperatures and delivers superior wear protection. According to Pennzoil, fuel economy is improved by an extra 550 miles a year on average compared to traditional oil. Whether you're driving on unpaved roads, carrying heavy loads or making lots of short trips, this synthetic oil is designed to maintain its integrity and protect your engine from wear.

Amsoil Signature Series synthetic motor oil

Best synthetic engine oil runner-up.

This premium synthetic motor oil from Amsoil provides 75% more engine protection and 50% more cleaning power than conventional motor oils. It also delivers 72% better protection of turbochargers. Formulated for thermal durability, this Signature Series synthetic motor oil resists breakdown and controls heat to maximize engine life and improve overall performance for up to 25,000 miles.

Valvoline Advanced full synthetic motor oil

Best cheap synthetic engine oil.

An affordable option from a well-known and trusted name, this Valvoline full synthetic motor oil will help keep you within your budget. Despite its affordable price, it includes anti-wear additives and performs well at both hot and cold temperatures. Antioxidants in the Valvoline Advanced synthetic oil formula help maintain viscosity and detergents help prevent the buildup of harmful deposits for extended performance.

Quaker State All Mileage motor oil

Best synthetic-blend engine oil.

A synthetic-blend motor oil provides added protection over conventional motor oil at a lower price than a full synthetic. This Quaker State All Mileage synthetic blend is formulated with anti-wear that offer added protection, especially for high-mileage engines. This oil also helps condition seals to stop leaks and reduce oil consumption, which prevents engine damage.

Castrol GTX motor oil

Best conventional engine oil.

Older car engines often do better with a conventional motor oil rather than the newer synthetic or synthetic blends. If you want to keep it old school, then Castrol GTX is a great traditional motor oil option. It provides good protection against burn and helps prevent the buildup of damaging sludge. This oil's formula includes antiwear additives to protect your engine and prevent thermal oil breakdown that your older engine will appreciate.

Valvoline Daily Protection conventional motor oil

Best conventional engine oil runner-up.

This Valvoline conventional motor oil protects against deposits through a wide range of temperatures from high heat to cold to keep your engine in good working order. It features detergents that reduce sludge formation and has anti-wear additives that stay in the oil longer. The goodies in this Valvoline Daily Protection conventional oil can more thoroughly protect your engine from one oil change to the next.

Valvoline High Mileage with MaxLife synthetic blend motor oil

Best high-mileage engine oil.

Designed for engines with 75,000 miles or more on the odometer, this high mileage motor oil from the Valvoline oil brand features anti-wear additives to help protect your engine components. It also includes detergents to help reduce the accumulation of dirt, so it's more easily flushed out during oil changes rather than sticking to your engine. Lastly, this Valvoline High Mileage with MaxLife synthetic blend oil formula includes seal conditioners that help prevent and treat oil leaks, which can be a problem with high-mileage vehicles.

Shell Rotella T6 diesel engine oil

Best diesel engine oil.

This Shell synthetic oil is specially formulated for diesel engines only. According to Shell, it improves fuel economy by 1.5 percent compared to SAE 15W-40 viscosity motor oils. Special additives included in the formulation of Rotella T6 protect against dirt and grit and this oil also resists viscosity loss, which helps maintain oil pressure. Rated for use in a variety of diesel vehicles from tractors to heavy-duty pickup trucks, this synthetic oil is my top pick for diesel engines.

Comparison of the best engine oils for 2022

What you need to know about engine oil

Motor oil is what keeps the components in your engine moving smoothly, so it's important that you change it at the manufacturer's recommended interval. Pushing beyond those recommendations could damage your engine. If the light comes on or if you smell burning, you should get your oil checked to be sure there isn't an issue even if you aren't due for your next oil change.

As you can see from our list, the three main types of motor oil are conventional oil, synthetic blends, and full synthetic engine oil.

Conventional motor oil is made from crude oil and has been around for ages. It does a fine job of protecting your engine and it does so at a lower cost than synthetic oil and synthetic motor oil blends. The drawback to conventional motor oil is that it breaks down more quickly. It also usually lacks detergents that help prevent sludge and keep your engine cleaner overall. While most newer cars are rated for synthetics, that might not be the case for an older car built before synthetics were commonplace.

Synthetic motor oils aren't made from crude. Instead, they're a man-made liquid designed for lubricating engines. They offer significant improvements over conventional oil with additives and formulas that help your engine stay clean and reduce friction. They also have a longer life that ensures they fully protect your engine between oil changes and may even let you go longer between oil changes. Since they don't require crude, they have the added benefit of a reduced environmental impact during manufacturing that extends to possible improvements in fuel economy. The biggest drawback to synthetic motor oil is that it's a more costly option.

A synthetic blend is the happy medium between the conventional oil and synthetic oil. It costs less than a full synthetic while still offering some of the same bonuses including a longer life than conventional oil and formulas that include detergents. It's a great choice if you want the benefits of a synthetic engine oil but you have a limited budget.

There's also weight to consider, which is the viscosity of a motor oil. You'll see this information in a format that looks like 5w30 or something similar. The first number indicates viscosity at low temperatures while the second number indicates viscosity at high temperatures. Depending on where you live, changing the weight of your engine oil between winter and summer may be recommended to ensure it flows freely. Follow whatever viscosity is recommended by the manufacturer to ensure you don't damage your vehicle.

Our list of recommended engine oils includes several affordable options, but you can still find cheaper motor oils on the shelves of your local automotive parts store. It may be tempting to grab that $.99 quart of oil from a company you've never heard of, but it's not a good idea. Unless you are in desperate need of some oil right that moment and there's no other option left on the shelf, stick with a reputable engine oil brand.

If an oil meets the American Petroleum Institute's engine oil standards, it'll have this label.

There are several things you can look for to help determine if the engine oil you're about to buy is going to do the job for which it's intended. Look for the API Donut. This symbol indicates that the oil meets the American Petroleum Institute's engine oil standards. It's usually on the label on the back of the bottle. You may also see the API Starburst, which is usually on the front of the label, and indicates that the formulation meets International Lubricant Specification Advisory Committee standards.

Another symbol to look for is the SAE logo on an engine oil label. This stands for the Society of Automotive Engineers, which is the group that designed the viscosity coding system I mentioned earlier. Seeing SAE listed next to the viscosity information on a bottle of oil ensures that it meets the group's standards for that grade of oil.

Written by Nicole Wakelin for Roadshow

Engine oil FAQs

What is the longest lasting motor oil.

The new synthetic oils are the longest lasting motor oils, but some last for longer than others. You should be able to find this information right on the bottle. Your next longest lasting oils are synthetic blends followed by conventional motor oil. Keep in mind that despite any recommended oil life you may see, getting your engine oil changed per the manufacturer's recommendations is always a good way to go.

How do I know which engine oil to put in my car?

The best way to know which kind of motor oil to put in your car is to break out that trusty owner's manual. It will provide information on exactly what type and weight of oil is recommended for your vehicle. Adhering to the manufacturer's recommendations is the best way to ensure the oil you use is doing its job to protect your engine.

How often should I change my oil?

The answer to this question varies depending on your car. Once again, going with the manufacturer's recommended oil change intervals is always your safest bet. You shouldn't go longer, but there may be times when you want to change your oil more frequently. If you drive off-road or anywhere with a lot of dirt in the air, then you may want to consider changing your engine oil sooner. The same is also true if your engine is put under constant strain towing a trailer or carrying a heavy payload.

Are the benefits of synthetic motor oil worth it?

Synthetic motor oil costs more than conventional motor oil so you may be wondering if it's worth the extra cost. In short, yes. A synthetic oil offers numerous benefits including a longer life, which may help you extend the number of miles you drive between oil changes. It often includes detergents to help clean your engine and reduce sludge as well as reducing friction. You may even see improved fuel economy, which again helps offset a bit of the extra cost.

What should you do with old engine oil?

Do not simply pour old motor oil down the drain. It needs to be disposed of properly or it will pollute the environment. Check with your city or town to see if they have either a permanent spot for disposing of oil at the dump or if they hold collections for hazardous materials including oil on select days during the year. Your local auto part store is also a good place to check with as many accept and recycle used engine oil.

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It is important to know how to read the labels and what to look for on both the front and back labels of the motor oil you buy, or you may be using product that can cause unsatisfactory performance or damage to your engine. The following are some key items to look for on motor oil labels and to consider before buying.

American Petroleum Institute (API) Service Symbol “Donut”

The service rating of passenger car and commercial automotive motor oils is classified by the American Petroleum Institute (API). The program certifies that an oil meets certain quality and performance standards. The service rating is shown in the API "Service Symbol Donut" on the product label, usually found on the back label.

The label includes two important pieces of information to determine if an engine oil is appropriate for use in your vehicle.

Oil Viscosity

The first piece of information speaks to viscosity grade. Viscosity is simply the resistance of a fluid to flow. A higher viscosity implies a slower flow and a thicker fluid. The viscosity changes with temperature to ensure protection and operability under all circumstances. Thus, the viscosity index measures the ability of an engine oil to resist becoming thinner at high temperatures. conventional oils incorporate additives to change its viscosity.

The Society of Automotive Engineers (SAE) defines a numerical system for grading motor oils according to viscosity.

Multi-viscosity motor oils are designated by two numbers – the first set of numbers (0, 5, 10, 15 and 25), is indicative of how the oil flows at low temperatures and is followed by the letter W to designate the engine oil's "winter" grade. The second set of numbers indicates how the oil flows at higher/operating temperatures. This is important since oil naturally thickens when cold and thins when hot. If the grade listed is not preceded by “SAE” and/or there is no “W-” between the first and second number, it may not be a multi-grade. As an example, a 5-30 is not the same as an SAE 5W-30.

You should be aware of changes in weather and climate to keep your engine fully functional. Here you can see the recommended oil for each ambient temperature:

Multi-viscosity (aka multi-grade) motor oils are most commonly recommended for use in vehicles currently on the road.

Look to your owner’s manual. It specifies the viscosity grade required for your car’s engine. Today, the most common grades are 5W-30 and 10W30.

API Service Classification

Viscosity characteristics, are the first and most important element of the classification and labeling of motor oils, but viscosity is not the only factor to consider when choosing a motor oil. The second thing to look for on the API donut is the service classification which helps determine the right ratio of oil properties to its operating conditions.

Motor Oil Service Classification for Gasoline Engines

The classification works this way; early in the automotive industry, The first API Service Classification of motor oil was SA. From there, as motor oil improved and met increasing specifications for newer cars, the classification moved to SB, SC, SD, and so on (skipping only SI and SK).

If you buy a motor oil meeting only API SA, it's a motor oil formulated for use in gasoline engine vehicles built in the 1920s. You can use newer motor oil with a more recent API rating. Newer motor oil blends are backwards compatible. That means they work just fine in older engines. You can’t say the same thing about older API ratings. They’re not compatible with newer engines. It’s because motor oil with older API ratings can’t handle the heat generated by newer engines. Heat causes the oil to degrade quickly, and once it degrades it can’t lubricate the engine well enough. If you use motor oil with an API rating for engines older than yours, your engine will wear prematurely. Because SA or other obsolete API Service Categories are sometimes mixed in with SN on the shelves, it is vital to read the API label carefully. Also, don't let price guide you. Motor oils with a Service Classification prior to SN (including SA) are often priced close to that of API SN.

Motor Oil for Diesel Engines

The API C-series classifications pertain to diesel engines. The “C” stands for compression ignition systems, which is how diesel engines operate. The C- Series contains API CK-4 (most Recent), CJ-4, CI-4 PLUS, CI-4, and CH-4 oils. Driven by federal regulations that raise the bar for fuel economy while lowering emission limits, modern diesel vehicles produce more horsepower and torque than ever. They run much hotter, operate under higher pressures and have the ability to burn up to 20 percent biodiesel. These advances place new demands on diesel oil, in addition to the demands for increased protection from those who depend on diesel power to make a living. New classifications are introduced when new technology or standards require reformulation of oils to protect modern diesel engine.

The new FA-4 classification pertains only to some 2017 and newer diesel engines mostly in over-the-road trucks. API FA-4 oils are not interchangeable or compatible with API CK-4, CJ-4, CI-4 PLUS, CI-4, and CH-4 oils. Consult your Owners manual for the correct oil.

Motor oils are not required to be licensed or certified by the API. However, some motor oils may meet the requirements for current API specifications without such certification. If the “Donut” is not displayed on the label, consumers are relying solely on the trust they have in the motor oil manufacturer. Again, checking the vehicle owner’s manual is advised since many car manufacturers recommend motor oil licensed by the American Petroleum Institute.

While the majority of vehicles currently on the road in the U.S. specify the use of motor oils meeting API specifications, some vehicle manufacturers require use of lubricants that meet their own specifications. Always check the labels on the motor oils purchased to assure they include any manufacturer specifications required in your vehicle.

API “Starburst”

The API “Starburst” is another symbol to look for and is found on the front motor oil label. The presence of this symbol indicates that the motor oil is formulated to meet the most current International Lubricant Specification Advisory Committee (ILSAC) standards which include additional requirements for fuel economy and emission system protection.

Although the “Starburst” is not required on motor oil labels, check your owner’s manual as it may specify use of motor oil bearing the “Starburst” symbol.

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Best Motor Oils: Ensure Smooth and Reliable Performance

Keep your car running smoothly and reliably with one of these top-shelf options.

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Whether you're a road warrior who stacks up the mileage every year or you only use your vehicle for A-to-B-type stuff, having quality motor oil coursing through your vehicle's engine is an excellent way to keep it running in peak condition and ensure proper maintenance. And while you can just go down to your local auto-lube spot, why not opt for the best? Whether you are looking for great value, reliability, durability, or versatility, we've assembled a list of some of the best motor oils currently available on the market. Let’s chat!

Mobil 1 Advanced Full Synthetic 5W-20 Motor Oil

Longer mileage rating means it's still in good condition when changed at a shorter interval

Rated to protect against low-speed pre-ignition and timing chain wear

Grade above other oil products
Superior cleaning power that prevents sludge buildup
Bottles may dent and leak during shipping
Might not be the best choice for high-mileage engines with brittle and/or worn seals

Valvoline Advanced Full Synthetic 5W-20 Motor Oil

Includes anti-wear additives, which provide 50 percent more wear protection than industry standards
Built to withstand both high and low temperatures
Extra detergents to fight sludge and other deposits
Reach out to the company for a replacement if you notice any damage upon delivery
The five-gallon jug version can be annoying to pour

Liqui Moly Premium 5W-40 Synthetic Motor Oil

Keeps the engine quite clean and provides extra protection against premature wear
Fosters rapid oil delivery at low temperatures, as well as high lubrication reliability at high and low temperatures.
Helps prevent oil consumption
Pricier than its competitors
Cap is designed for easy filling but can be hard to operate

Summary List

Best overall: mobil 1 advanced full synthetic motor oil 5w-30, best value: valvoline advanced full synthetic sae 5w-20 motor oil, best premium: liqui moly 2041 premium 5w-40 synthetic motor oil, best high-mileage: valvoline high mileage with maxlife technology sae 5w-30 synthetic blend motor oil, best high performance: motul 109776 8100 x-cess gen2 5w-40, best for hybrids: valvoline hybrid vehicle full synthetic sae 0w-20 motor oil, our methodology.

Surprisingly, it's not terribly easy selecting a solid list of the top motor oils on the market, even for old automotive hands like the author. There are so many to choose from and many different brands, all of whom use the same lingo to boast about how their oil is better than the others. We came to our choices by looking over more than 20 oils , taking current oil technology into consideration, and weighing out a well-rounded list that will benefit a wide range of consumers. Value came into play quite a bit as well, but the links we've included have the best prices online.

Best Motor Oils: Reviews & Recommendations

Different viscosities for different vehicles

Longer mileage rating

Superior sludge protection

Not the best choice for high-mileage vehicles

Mobil's 5W-20 full-synthetic motor oil is designed to reduce engine wear and make critical engine components run a lot smoother. It’s designed to adhere to important engine components when the oil drains down and provides a layer of protection when you warm up your vehicle. The oil works great if you frequently drive in heavy traffic or take several short trips during the week and it can make your engine quieter, smoother, and create a noticeable improvement on high-mileage vehicles compared to standard oil blends. This oil is a quality above run-of-the-mill crude oils and has great cleaning power,. That said, bottles of Mobil 1 have been known to arrive with dents and small leaks. Also, vehicles with old, brittle seals may not take to the stuff as well as others.

Wide variety of viscosities

Lots of detergents

Excellent overall wear protection

Not the easiest jug to pour with

As far as high bang-for-your-buck motor oil goes, it's tough to beat Valvoline's Advanced Full Synthetic SAE 5W-20 Motor Oil. This oil is specially designed to provide excellent protection for your car, truck, or SUV, yet for a noticeably lower price than others. It's specifically formulated to protect against extreme engine stress due to stop-and-go driving, extreme temperatures, hauling, and towing, too. This motor oil includes anti-wear additives, which provide 50-percent more wear protection than industry standards and this full synthetic formula is designed to withstand both high and low temperatures. Extra detergents can be found in this motor oil to assist with fighting against sludge and other deposits. High-quality antioxidants help to resist motor oil breakdown in extreme weather conditions. It isn’t without its issues, though, as the 5-quart jug can be a pain to pour, leaks during shipping are known to occur, and dents to the bottles are common. None are deal-breakers, but you should have all the facts.

Best Premium

Superior wear protection

Cuts down on consumption

Massive amount of cleansing additives

This oil offers a high level of protection against wear that really helps prolong the life of the engine. It fosters rapid oil delivery at low temperatures as well as high lubrication reliability in high and low temperatures. It also keeps your engine clean. Liqui Moly is used by many mechanics who work on German vehicles, and it has a rather strange-yet-interesting grayish color due to its robust additives. This oil is rated to go further than most oil-change intervals, looking almost unused at the 5,000-mile mark, but you should still follow your manufacturer's recommended interval. It also cuts down on oil consumption, which is especially crucial in modern turbocharged direct-injection engines and has a conveniently designed spout that makes filling easy.

Extra detergents for cleaning sludge

Goes easy on seals and helps replenish them

Great overall wear protection

Great for older vehicles that run better on synthetic blends and conventional oils

None to really report

This synthetic blend oil from Valvoline contains seal conditioners that restore aging engine seals to help stop and prevent oil leaks. Extra protection prevents engine wear, and extra detergents remove sludge and deposits to keep high-mileage engines cleaner. In addition, antioxidants help prevent the oil from breaking down and clogging the engine with sludge and deposits. The quality of this motor oil is excellent for the price, and it has some of the benefits of full-synthetic oil at a much cheaper price. It does a great job at stopping and reducing leaks thanks to its various seal-renewing additives. It holds up well over time and makes the engine run quiet, smooth, and happy. Valvoline says it does a great job at suspending debris and engine deposits, allowing them to be flushed out at its next change interval. But this motor oil won’t improve performance on severely worn engines, nor does it meet General Motors' Dexos standard, and it features a slightly higher price than some of its competitors.

Stands up to prolonged high heat

Excellent wear protection

Resists burn

Higher in price

Motul's 100% synthetic oil takes the top spot when it comes to performance. The brand boasts that it's been a top name for a long time, as well as that its 8100 X-Cess Gen2 is specially formulated to far exceed manufacturers' requirements. This high-end formula is well-regarded among the motorsports community, and offers excellent protection during prolonged high-heat conditions.

Meets or exceeds most manufacturers' standards

Offers excellent lubricity

Great availability of viscosities

None to report

Hybrid vehicles are not the same as normal combustion-only ones. These vehicles feature different engine tolerances, operating cycles and conditions, and require different maintenance intervals. Valvoline understands that and is the reasoning behind its full synthetic motor oil designed specifically for hybrid vehicles. Aimed at reducing the time between cold start and at operating temperature, the fully synthetic oil is meant to keep your ride humming along and happy even when the gasoline-driven engine turns off, then on, then off again. And it shields your engine from heat, friction, and other issues that can plague hybrid cars, trucks, and SUVs. This specific oil is 0W-20 but comes in a variety of different oil weights to satisfy your vehicle’s predetermined weight requirements.

Our Verdict on the Best Motor Oils

For high-quality motor oil, consider Mobil 1 Advanced Full Synthetic 5W-20 Motor Oil , which is designed to reduce engine wear and make critical engine components run a lot smoother. Valvoline Advanced Full Synthetic SAE 5W-20 Motor Oil is a budget-friendly option, specifically formulated to protect against extreme engine stress due to stop-and-go driving, extreme temperatures, track driving, hauling, and towing. Liqui Moly Premium 5W-40 Synthetic Motor Oil is a premium oil that stands up to the high power output and heat of high-performance engines. It's an excellent choice for modified engines with more-than-stock power.

You’ve got questions. The Drive has answers!

Q: What are some tips and tricks for selecting the right oil and performing this kind of maintenance?

A: Before you choose a motor oil, read your owner's manual. It will contain specific information from the manufacturer about your vehicle's engine and the recommended motor oil specific to the model, including the same SAE viscosity and possibly even the brand that the factory recommends. While you may be tempted to use the best oil brand, it's more important that you use the best oil type for your vehicle. This is based on the make, model, year, mileage, and other requirements.

Q: What does the label on a motor oil container mean?

A: The API label lets you know if the oil meets the current service rating as determined by laboratory and engine tests. There is also the Society of Automotive Engineers (SAE) star logo with the viscosity number and information on whether the oil has passed the energy-conserving test.

Q: How often should I change the oil in my car?

A: Check your owner's manual to determine the best maintenance schedule. Most newer cars can go 5,000 to 10,000 miles between oil changes. However, if you tow heavy items, do a lot of stop-and-go driving, drive your car on a racetrack, or go off-roading frequently, it's a good idea to change your oil more often, as the engine is working harder than usual.

Q: Is it worth it to use specialty oil?

A: Some motor oils have an extended-life feature, which purports users can wait for 15,000 miles between oil changes. However, it's crucial to check your owner's manual to determine how often you need to change your oil instead of relying on the recommendation of an oil brand.

Q: Is it OK to change my car oil from conventional to synthetic?

A: Be sure to check with your vehicle's manufacturer before you make the switch from conventional to synthetic oil. A trusted mechanic will also advise you about the best motor oil for your car or truck.

Why Trust Us

Our reviews are driven by a combination of hands-on testing, expert input, “wisdom of the crowd” assessments from actual buyers, and our own expertise. We always aim to offer genuine, accurate guides to help you find the best picks.

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Much like blood is the lifeline to keep the human body moving and pumping, motor oil is the lifeline to keep vehicle engines working properly and efficiently, pumping out energy and power to get you where you’re going.

“Engines are designed with oil in mind, and they are meant to work as a team together,” says Valvoline™ Senior Scientist Erin Findley.

In basic terms, motor oil coats all moving parts within an engine to allow for efficient, effortless, and continuous proper operation. But it’s also much more: not only does it lubricate parts to keep them functioning optimally, it also cools, cleans, and seals engines.

Without oil to coat moving parts, engines would immediately seize and break. Failing to properly maintain a vehicle with regular oil changes can be a recipe for eventual failure – and potentially high repair bills that come with it.

It’s a no-brainer: spend a few bucks regularly on a few containers of motor oil, or eventually spend hundreds, if not thousands, of dollars on engine repairs down the road – all the way up to potentially necessitating a brand new engine under your hood. Most parts contained within an engine need the lubrication capability oil possesses to keep moving efficiently and at peak performance.

If a car owner fails to maintain the oil level in his/her vehicle (typically 4-5 quarts), or fails to change oil at regular intervals, the projected lifetime of the engine can be significantly shortened as a result. Working in conjunction with both the oil pump and oil filter, motor oil performs a plethora of jobs:

• Helps engines stay cool so that heat does not cause internal parts to break down.

• Reduces wear and tear on the parts.

• Seamlessly moves loose particles (especially from the combustion chamber) from the engine to the oil filter so that they're removed on the next maintenance service.

• Forms a protective layer to prevent corrosion of engine surfaces.

• Helps maintain or improve fuel economy.

Valvoline manufactures motor oil for virtually all uses, including specialized products for specialized uses.

But just like different foods can provide a wide variety of nutrition, power, health, and energy to the human body and potentially extend its lifespan, different forms of motor oil for various needs and uses – particularly a member of the Valvoline family of motor oils – can help keep your vehicle running smoothly, operating optimally and efficiently, and will ultimately extend its lifespan. Which motor oil is right for you? To begin with, always consult your vehicle’s owner’s manual for compatibility and warranty information, and check out "Why Is There More Than One Type of Motor Oil?"

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Motor Oils To Avoid And Alternatives To Buy: Your Engine Will Thank You

Posted: March 18, 2024 | Last updated: March 18, 2024

<p>Choosing the right motor oil is crucial for the optimal performance and longevity of your engine. The wrong motor oil can lead to a range of issues, including insufficient lubrication, increased friction, and potential long-term damage. To avoid these problems, it’s essential to make informed decisions about the type and quality of motor oil used in your vehicle.</p>

Choosing the right motor oil is crucial for the optimal performance and longevity of your engine. The wrong motor oil can lead to a range of issues, including insufficient lubrication, increased friction, and potential long-term damage. To avoid these problems, it’s essential to make informed decisions about the type and quality of motor oil used in your vehicle.

Avoid: Liberty Motor Oil

Liberty Motor Oil falls short in delivering quality with low viscosity, insufficient additives, and a higher volatility rate, leading to poor long-term performance. The brand’s claims on viscosity levels and product quality do not align with the actual results.

Avoid: Quaker State Q

Quaker State Q, despite its high price tag, lacks quality, essential additives, and falls short in meeting lubrication requirements. False claims about multi-viscosity and high volatility make it a brand to avoid for those seeking optimal engine performance.

Avoid: Petrol Motor Oil

Petrol Motor Oil misleads consumers with inaccurate viscosity levels, fake SAE specifications, and poor environmental performance, leading to increased fuel consumption. The brand fails to keep up with market standards, making it an unwise choice, especially for newer vehicle models.

Avoid: Xpress Lube Pro

Xpress Lube Pro’s improper SAE grading and inclusion of non-essential impurities result in poor oil quality. The brand’s failure to meet the needs of modern car models, coupled with fake labeling, makes it advisable to steer clear to avoid potential issues.

Avoid: Questron

Questron’s unassured viscosity grade, tendency to make the engine noisy, and insufficient lubrication highlight its shortcomings. The brand’s false labeling and inability to deliver average outcomes make it a less-than-ideal choice for consumers.

Avoid: Bullseye Motor Oil

Bullseye Motor Oil disappoints customers with its thin product, lack of essential additives, and poor lubrication. The brand’s stylish packaging doesn’t compensate for its low-quality oil, making it a brand to avoid for those seeking reliable engine performance.

Avoid: Xcel Motor Oil

Xcel Motor Oil fails to meet the innovative requirements of modern vehicles, lacking in standard product quality. The brand’s poor viscosity index and absence of essential additives make it unsuitable for maintaining a smooth-running engine.

Avoid: Q10-40 Motor Oil

Q10-40 Motor Oil’s poor viscosity, lack of additives, and increased susceptibility to engine corrosion make it a subpar choice. The brand’s shortcomings in providing essential engine protection and quality place it among the worst engine oil options.

<p>Castrol stands out as one of the best motor oil brands, offering quality performance, environmental friendliness, high mileage, and excellent engine protection. Its diverse options and affordable price range make it a top choice for consumers seeking reliable motor oil.</p>

Buy: Castrol

Castrol stands out as one of the best motor oil brands, offering quality performance, environmental friendliness, high mileage, and excellent engine protection. Its diverse options and affordable price range make it a top choice for consumers seeking reliable motor oil.

<p>Mobil takes the lead as the best overall engine oil, endorsed by NASCAR and Chevrolet Performance. With a robust research and development department, Mobil offers innovative synthetic oils catering to various engine types, demonstrating consistent quality and performance.</p>

Mobil takes the lead as the best overall engine oil, endorsed by NASCAR and Chevrolet Performance. With a robust research and development department, Mobil offers innovative synthetic oils catering to various engine types, demonstrating consistent quality and performance.

Buy: Pennzoil

Pennzoil’s extensive product range, commitment to quality, and performance in extreme temperatures position it as a reliable choice. The brand’s association with motorsports and dedication to customer satisfaction contribute to its positive reputation.

Buy: Valvoline

Valvoline, known as “The Original Motor Oil,” offers a range of options, including high mileage and synthetic blends, making it suitable for various engines. With a history of innovation and quality, Valvoline stands as a trusted brand in the motor oil industry.

<p>In conclusion, selecting the appropriate motor oil is paramount for maintaining a healthy and efficient engine. The comprehensive analysis of various motor oil brands, both to consider and avoid, provides valuable insights for consumers seeking optimal engine performance. By making informed choices based on the specific needs of the vehicle, drivers can ensure longevity, reduce wear and tear, and contribute to the overall well-being of their engines.</p><p> <h3><strong>What To Read Next</strong></h3> <ul> <li><strong><a href="https://financiallyplus.com/this-genius-trick-every-online-shopper-should-know/?utm_source=msnfpam&utm_campaign=msnfpam">This Genius Trick Every Online Shopper Should Know</a></strong></li> <li><strong><a href="https://financiallyplus.com/best-high-yield-savings-accounts-this-month/?utm_source=msn&utm_channel=2222024686">Best High-Yield Savings Accounts This Month</a></strong></li> <li><strong><a href="https://financiallyplus.com/best-gold-ira-this-year/?utm_source=msn&utm_channel=2222024686">Best Gold IRA This Year</a></strong></li> <li><strong><a href="https://financiallyplus.com/deals-on-popular-cruises/?utm_source=msn&utm_channel=2222024686">Deals On Popular Cruises</a></strong></li> <li><strong><a href="https://financiallyplus.com/the-best-internet-deals-older-americans-need-to-take-advantage-of-this-year/?utm_source=msn&utm_channel=2222024686">The Best Internet Deals For Seniors</a></strong></li> <li><strong><a href="https://financiallyplus.com/affordable-life-insurance-options-for-seniors/?utm_source=msn&utm_channel=2222024686">Affordable Life Insurance Options for Seniors</a></strong></li> </ul> </p><p><a href="https://autooverload.com/?utm_source=msnstart">For the Latest Automotive News, Headlines & Videos, head to Auto Overload</a></p>

In conclusion, selecting the appropriate motor oil is paramount for maintaining a healthy and efficient engine. The comprehensive analysis of various motor oil brands, both to consider and avoid, provides valuable insights for consumers seeking optimal engine performance. By making informed choices based on the specific needs of the vehicle, drivers can ensure longevity, reduce wear and tear, and contribute to the overall well-being of their engines.

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Rogers, AR 72756. Phone: (479)339-4795. Email: [email protected]. If you want your boat's engine to enjoy a long and productive life, you need to treat it with nothing less than the best marine oil that you can buy. Since your boat's engine is the most important part of the vessel (aside from the hull, of course), it needs….
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Best motor oil for your boat engine, how to choose.
Engine makers don't formulate motor oils, the oil manufacture's formulate oils. Just as designing engines to meet the newest standards is a continuous process with lots engineering and testing, Formulating oil to meet the latest standards in a variety of operating environments takes the same amount of engineering and testing.
Outboard Expert: Marine Oil for Outboard Engines
A marine engine is also a real torture chamber for oil. Unlike automotive engines, which operate at peak power for just a few seconds at a time - as you accelerate on a freeway ramp, for example - a marine engine may run for hours at high RPM and under heavy load. This extended high-RPM operation can literally shear (or split) viscosity ...
Marine Lubricants & Tips: More Than Just Oil
After completing the oil change, start the engine, either in the water or on a flush hose, and let it run for a few minutes. Then shut down and check the oil level on the dipstick. Also check for leaks around the oil filter. Starting the engine will circulate fresh oil through the engine before long-term storage.
Outboard Engine Oil: When & How to Change It
Inspect the drain screw or bolt's washer or O-ring as the old oil drains out, and replace it if it's worn. Step 6. Reinstall the oil drain screw/bolt and its washer or O-ring, and wipe away any oil from the lower cowling and the lower unit. Step 7. Tilt the outboard to the vertical position (if it isn't already). Step 8.
How To Change Boat Engine Oil
Allow the oil to drain into a catch pan. 3. Change the oil filter. On this engine, part of the cowling needs to come off to get at the oil filter. 4. Remove the old filter carefully to minimize spills. 5. Replace with a new filter. Lube the O-ring at the top with a bit of new oil.
Best Motor Oils For 2023
Mobil 1 Extended Performance : Best Advanced Synthetic Motor Oil. AmazonBasics Full Synthetic High Mileage Motor Oil : Best Budget Synthetic Motor Oil. Castrol GTX : Best Conventional Motor Oil ...
Motor Oil
Conventional motor oil is a mixture of base oil and additives that lubricates, cleans, and protects the engine. This was long the standard kind of oil in most vehicles, but has become less common as synthetic oils have gotten better. - Synthetic motor oils are either full synthetic oils or synthetic blends.
Motor oil
Motor oil is a lubricant used in internal combustion engines, which power cars, motorcycles, lawnmowers, engine-generators, and many other machines. In engines, there are parts which move against each other, and the friction between the parts wastes otherwise useful power by converting kinetic energy into heat.
Top-Rated Synthetic Oils for Protecting Your Car's Engine
Valvoline Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-30 Motor Oil. Now 24% Off. $8 at Amazon $9 at Walmart. From one of the OG motor-oil brands, this synthetic oil is great ...
Motorcraft Engine Oil
Your vehicle needs a reliable engine oil to prevent wear and tear in parts and internal components. Motorcraft engine oil protects your vehicle by lubricating the parts and maintaining the right temperature. If you notice thick oil texture, dark oil, or the oil change reminder has just gone on, you need to replace your engine oil.
Motor Oil
Motor oil lubricates internal engine parts and coats the inside of your engine to prevent overheating, friction, and damage to moving parts. It is also designed to catch small particles and suspend them to prevent engine damage, along with help from your oil filter. These particles are trapped by the filter, but oxidation, heat, dirt, and ...
Motor Oils
MOTOR OIL. Home Products Chemicals and Lubricants Motor Oil. Diesel Engine Motor Oil. Gasoline Engine Motor Oil. Shop Motorcraft® motor oils for Ford & Lincoln vehicles online. Search products, find where to buy, view warranty details & more.
What Is 0W-20 Motor Oil?
Motor oil viscosity is commonly measured at lower and higher temperatures. The properties of the oil at lower temperatures define the first part of the motor oil grade. In the example of a 0W-20, the "0W" part of the grade is related to the measurement of viscosity at low temperatures as defined by SAE J300 (and the "W" stands for ...
ENGINE OILS
Part synthetic motor oils are a blend of mineral oil and synthetic oil, to give added performance, but still at a lower cost than full synthetic motor oils. Full synthetics are the most expensive motor oils as they are highly refined, but offer the best protection and economy to absolutely every vehicle. To learn more about Synthetic Motor Oil ...
Best Engine Oil for 2022
It also delivers 72% better protection of turbochargers. Formulated for thermal durability, this Signature Series synthetic motor oil resists breakdown and controls heat to maximize engine life ...
Gasoline Engine Motor Oil
SAE 5W-30 Synthetic Blend Motor Oil. SAE 5W-50 Full Synthetic Motor Oil. SAE 5W-20 Full Synthetic Motor Oil. Shop Motorcraft® gasoline engine motor oil for Ford & Lincoln vehicles online. Search products, find where to buy, view warranty details & more.
Motor Oil Grades and Classifications Explained
Multi-viscosity motor oils are designated by two numbers - the first set of numbers (0, 5, 10, 15 and 25), is indicative of how the oil flows at low temperatures and is followed by the letter W to designate the engine oil's "winter" grade. The second set of numbers indicates how the oil flows at higher/operating temperatures.
The Best Motor Oils of 2023
Liqui Moly Premium 5W-40 Synthetic Motor Oil. This oil offers a high level of protection against wear that really helps prolong the life of the engine. It fosters rapid oil delivery at low ...
Back to Basics: What is Motor Oil and Why do You Need It?
In basic terms, motor oil coats all moving parts within an engine to allow for efficient, effortless, and continuous proper operation. But it's also much more: not only does it lubricate parts to keep them functioning optimally, it also cools, cleans, and seals engines. Without oil to coat moving parts, engines would immediately seize and break.
Mobil 1 FS Standard Full Synthetic Engine Oil 0W-40 5 Quart
Approved for many Mercedes-Benz, VW, Audi and Porsche vehicles, this formula provides excellent turbocharged engine protection. Mobil 1 is America's leading synthetic motor oil brand at retail**, recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR®.
Find the Right Engine Oil & Amount
Oil Finder. Use the Oil Finder tool to help select the correct oil for your small engine. Choose your equipment, engine name (usually found on your engine label) and outside temperature that you will be using it in to find your recommended oil and how much to use. If you need help determining if your riding mower's engine is a single cylinder ...
How to Build a Functional PCV System in Performance Engines
Even a freshly machined engine will have leakage rates of 3 to 5 percent, with that number growing into the double digits with age. On a typical fresh V-8, that can be around 10 to 15 cfm from blowby.
Motor Oils To Avoid And Alternatives To Buy: Your Engine Will ...
Choosing the right motor oil is crucial for the optimal performance and longevity of your engine. The wrong motor oil can lead to a range of issues, including insufficient lubrication, increased ...
Hyundai to recall 28,439 vehicles in US due to oil leak risk, NHTSA
March 14 (Reuters) - Hyundai Motor America (005380.KS), opens new tab is recalling 28,439 vehicles in the U.S. as a possible oil leak may increase the risk of an engine compartment fire, the ...