Best 4 Stroke Outboard Motor Oil in 2022: Top Brands Review

Sometimes it might be quite difficult to find the best 4 stroke outboard motor oil. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this 4 stroke outboard motor oil buying guide.

Our 10 Recommendations:

Our Favorite 4 Stroke Outboard Motor Oil Reviews:

Bestseller No. 1
Quicksilver 10W-30 Marine Engine Oil - 1 Gallon
  • Designed for use with all 4-stroke marine outboard motors and inboard and sterndrive engines
  • Formulated to protect marine engines against corrosion and excessive wear
  • Offers outstanding shear strength, viscosity retention and corrosion resistance
  • Exceeds all marine industry 4-stroke oil requirements, including FC-W and FC-W Catalyst Compatible, and marine manufacturer warranty requirements. Refer to owner's manual for specific model oil requirements.
  • 10W-30 viscosity
Bestseller No. 2
Quicksilver 10W-40 Marine Engine Oil - 1 Quart
  • Designed for use with all 4-stroke marine outboard motors and inboard and sterndrive engines
  • Formulated to protect marine engines against corrosion and excessive wear
  • Designed to withstand the heat and stress of high-rpm operation
  • Exceeds all marine industry 4-stroke oil requirements, including FC-W and FC-W Catalyst Compatible, and marine manufacturer warranty requirements. Refer to owner's manual for specific model oil requirements
  • 10W-40 viscosity
SaleBestseller No. 3
Quicksilver 25W-40 Marine Engine Oil - 1 Gallon
  • Designed for use in four-stroke marine engines
  • Formulated to provide superior corrosion resistance and wear protection to maintain peak engine performance and reliability
  • Special viscosity modifiers help to optimize the performance of high-rpm four-stroke outboard motors
  • FC-W Catalyst Compatible
  • 25W-40 viscosity
Bestseller No. 4
Mercury Marine 4 Stroke Outboard Engine Crankcase 10W30 Oil Gallon 92-8M0078626
  • For use in 4-cycle outboard engines
  • Use of this oil will not void manufacturer's warranty
  • Outperforms automotive oils in marine applications
  • Most recommended OEM marine engine oil
  • Eliminates thermal breakdown under extreme rpm, temperatures and loads
Bestseller No. 5
STAR BRITE Super Premium Synthetic Blend 4 Stroke Oil 10W 40-1 GAL (028200)
  • Shear-stable polymer additives plus synthetic base stocks maintain proper viscosity under extremely harsh marine conditions Synthetic/organic blend assures excellent low-temperature properties for quicker starts
  • This product exceeds the new NMMA specifications FCW desgined especially for 4 stoke Outboard Motors.
  • Exceeds OEM requirements-will not void engine warranty
  • Surpasses API requirements for SJ, CF-4 and CH-4. Provides maximum protection in severe, high RPM applications.
  • Additive package optimizes engine cleanliness, prevents sludge build up.
SaleBestseller No. 6
Yamaha Yamalube 4M Outboard FC-W 10W-30 Four Stroke Engine Oil One Quart
  • Genuine OEM Yamaha
  • 1-Quart Plastic Easy-Pour Container
  • Yamalube 10W-30 4M Outboard Mineral FC-W Engine Oil
Bestseller No. 7
Mercury OEM Oil Change & Filter Kit 40-50-60hp Four Stroke Outboard 8M0081916
  • Mercury 25W-40 Marine Engine Oil features high-tech, advanced anti-wear additives that provide up to 35% better camshaft wear protect
  • Designed to maintain engine reliability and performance, tests have shown that Mercury 25W-40 Marine Engine Oil holds its viscosity ratings longer in industry wear-testing than other oils on the market.
  • Mercury Oil, combined with a Mercury Oil Filter will offer optimum marine engine protection.
  • NOTE: It is recommended that boat owners change their engine oil annually or as noted in their owners manual.
Bestseller No. 8
MERCURY Genuine 1 Gallon 4-Cycle Oil, 25W40-8M0078628
  • Multi-viscosity 25W-40 oil formulated to eliminate thermal breakdown (no viscosity improvers necessary) under extreme temperatures and loads.
  • Field-tested and proven in gas and diesel applications.
  • Provides superior lubrication and protection of internal components from corrosion, wear scuffing and scoring - even in higher temperature engines.
  • Provides warranty protection for Mercury MerCruiser engines
  • Replaces prior part number 92-858048K01
Bestseller No. 10
Suzuki ECSTAR V7000 10W-40 Marine 4-Stroke Engine Oil, 4 Gal with 4X 16510-87J00 Oil Filter
  • Suzuki ECSTAR V7000 10W-40 Marine 4-Stroke Engine Oil, 4 Gal (990C0-01E30-GLN)
  • Includes 4x 16510-87J00 Oil Filter

Last update on 2022-11-28 / Affiliate links / Images from Amazon Product Advertising API

How to find the best 4 stroke outboard motor oil?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best 4 stroke outboard motor oil for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good 4 stroke outboard motor oil recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

  • What features does the 4 stroke outboard motor oil need to have to be perfect for my needs?
  • What is my budget?
  • Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for 4 stroke outboard motor oil to find what you’re looking for:

Brand

In some cases, the brand of 4 stroke outboard motor oil is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.

Features

The features in any given 4 stroke outboard motor oil are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.

Reviews

Customer reviews about 4 stroke outboard motor oil are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.

Quality

Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare 4 stroke outboard motor oil quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.

Warranty

Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.

Conclusion

The quest to find the best 4 stroke outboard motor oil can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.