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Engine Oil and Lube When it comes to longevity, performance and protection, choosing the right oil and filter is the single most important thing you can do for your outboard. Let’s talk about the advantages of Yamalube oil and a Genuine Yamaha oil filter, and review when and how to change your oil.

A full-synthetic blend great for high-performance outboards like V MAX SHO®. Protects from cold starts, hours of trolling, and high-load and high-speed operation.

Yamalube Marine Full Synthetic oil.
Yamalube Marine Full Synthetic oil.
Shop Yamalube products at your nearest authorized Yamaha Marine dealer. Find your dealer.
From heavier loads to corrosive environments—outboards take much more punishment than your typical car engine. This means outboards require special protection. Yamalube oil is certified to deliver it.
A boat owner checks the oil on his outboard.
An outboard’s operating conditions are so different, that special levels of certification exist for marine engine oils: FC-W® (four stroke) and TC-W3® (two stroke). These represent the minimum standards of the National Marine Manufacturer’s Association® (NMMA®) for marine engines.

Yamalube 4M and 2M outboard engine oils meet or surpass these requirements. Featuring a proprietary blend of marine-specific anti-wear additives, shear-stable polymers, corrosion inhibitors, detergents, dispersants, and viscosity index improvers, they’re superior to automotive oils in their protection, durability, and corrosion resistance. Whatever oil you choose for your outboard, make sure it is the correct type and viscosity and that it carries either the NMMA® FC-W® or TC-W3® label.
Engine load. The typical loads placed on your outboard are much heavier than on your car. This means your outboard is working much harder than your car’s engine. Yamalube 4M and 2M marine engine oils contain specific anti-wear additives to account for this.

Engine speed. Your outboard operates at a much higher RPM than your car’s engine. It must rev higher to create higher speeds, rather than just changing gears like your car. That’s tough on your oil, and can literally shear (or split) the molecules in ordinary automotive oil. Yamalube 4M and 2M have special shear-stable polymers to combat this and provide constant lubrication.
Operating temperature. Outboards are cooled using raw water, which is often cool to very cold. On the other hand, saltwater will begin to crystallize if its temperature is raised above 170° F, potentially causing blockage in the cooling passages and leading to engine overheat and possible damage. Because of these two factors, your outboard operates full-time at a temperature much different than your car and requires very different qualities in its lubricating oil.

Operating environment. Your outboard is constantly ingesting humid air directly off the water’s surface in order to operate. This air also gets inside combustion chambers through open valves when it’s not in use. And in a saltwater environment, that air is even more corrosive. Yamalube 4M and 2M are formulated with special anti-corrosion agents to help combat and prevent the corrosive effects of this environment.
Yamalube oil change kit.
Your authorized Yamaha Marine Dealer has everything you need to make changing your oil easy. Our Genuine Yamalube Oil Change Kits are tailored to your specific model and include the right type and amount of Yamalube marine oil, a Genuine Yamaha oil filter, and a drain gasket. Kits are available in Yamalube 4M 5W-30, 10W-30, and 20W-40 weights.
Yamalube oil change kit.
Nothings as easy as having your Yamaha Marine dealer and their trained service technicians change the oil for you. They’ll make sure the job’s done right and dispose of the oil, so you can get back to the fun, faster.

Whether you DIY or rely on your dealer for maintenance, you can track it all in our Siren Connected Boat™ app.
A phone with the Siren Marine App open to maintenance information.

WHEN WAS YOUR LAST OIL CHANGE?

Know instantly with the Siren Connected Boat<sup>™</sup> App

A phone with the Siren Marine App open to maintenance information. Are you due for your 20-hour new-outboard or 100-hour annual oil change? Stay on top of your service with the Siren Connected Boat app. It tracks DIY and dealer-completed maintenance right on your smartphone.

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