Yamaha Yamalube 2-Stroke Oil

Why Choose Yamalube 2-Stroke Oil for Yamaha Outboards?

This technologically advanced semi-synthetic base stock and additive 2-stroke engine oil provides all-season performance and greatly reduces visible smoke.

For Yamaha owners, Yamalube 2-stroke oil is more than just engine protection—it’s a purpose-built formulation designed to meet the performance demands of Yamaha outboards, motorcycles, and PWCs. Whether you need oil for premix or oil-injected 2-cycle systems, this product ensures precise lubrication and optimal combustion under all marine conditions.

Low deposits and reduced carbon and varnish deposit means longer engine life and greater performance over time. Yamalube is the ONLY oil “built around” the unique demands, operating characteristics and applications of Yamaha engines. Collaborating with Yamaha engine designers, our global oil engineers formulate each Yamalube oil from scratch, to be engine/application-specific and to meet/exceed industry standards like JASO MA.

From their firm determination and hard work came Yamalube EFERO R, a full-synthetic oil with a low, 5W-20 viscosity. Its performance was on par with full-on racing oil and the model the team had in mind was the FZR750R, a race homologation model also known as the OW01.

Benefits of Yamalube 2M TC-W3® for Marine Engines

Yamalube 2M TC-W3®, Yamaha-formulated and NMMA®-approved, provides outstanding protection for two-stroke, water-cooled outboards. Its special blend of additives combats ring stick, corrosion, varnish, and wear—making it the standard by which other two-stroke oils are judged.

Many boaters ask, “What is the best oil for a 2-stroke Yamaha outboard?” The answer is simple: Yamalube 2-stroke oil meets or exceeds NMMA TC-W3 standards, delivering reliable performance and protecting against corrosion, wear, and carbon build-up. It’s the best oil for Yamaha 2-stroke outboards because it’s engineered by the same team that builds the engines.

How Does Yamalube 2-Stroke Oil Compare to Other Oils?

Two-stroke oil (also referred to as two-cycle oil, 2-cycle oil, 2T oil, or 2-stroke oil) is a special type of motor oil intended for use in crankcase compression two-stroke engines. Unlike a four-stroke engine, whose crankcase is closed except for its ventilation system, a two-stroke engine uses the crankcase as part of the induction tract, and therefore, oil must be mixed with gasoline to be distributed throughout the engine for lubrication.

A two-stroke engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston during one revolution of the crankshaft. Unlike a four-stroke engine, a unique feature of a two-stroke engine is that they do not have an internal oil reservoir. Instead, two-stroke engines require the owner to mix oil into the fuel at a predetermined ratio to ensure adequate lubrication during operation.

A premium lubricant designed to give excellent performance in two-cycle engines used to power outboard motors, Yamalube 2-stroke oil is especially formulated for oil-injected as well as pre-mixed gasoline/oil lubricated engines. It’s intended for high-performance, water-cooled, 2-stroke engines. Avoid regular automotive engine oils—they are not suitable for the rigors of the marine environment. Use a motor oil specifically formulated for marine conditions, like Yamalube® 2M for two-stroke outboards.

If you're wondering about the difference between Yamalube 2M and other 2-stroke oils, the answer lies in Yamaha’s rigorous testing and engine-specific formulation. Unlike generic 2-cycle oils, Yamalube 2-stroke oil is developed to meet the thermal and load demands of marine-grade two-stroke engines. It reduces ring stick, minimizes deposits, and offers better fuel-oil mix stability—even in saltwater environments.

Frequently Asked Questions About Yamalube 2-Stroke Oil

Can I use Yamalube 2-stroke oil in non-Yamaha engines?

Yes. While it's formulated specifically for Yamaha engines, many owners of other brands use Yamalube 2-stroke oil because of its superior protection and clean-burning formula.

What is the recommended oil mix ratio for Yamalube 2-stroke oil?

For pre-mix applications, Yamaha recommends a 50:1 gas-to-oil ratio unless otherwise specified by your owner’s manual.

Yamaha Yamalube 2-Stroke Oil is the ONLY oil “built around” the unique demands, operating characteristics, and applications of Yamaha engines. Collaborating with Yamaha engine designers, our global oil engineers formulate each Yamalube oil from scratch to be engine/application-specific and to meet or exceed industry standards like JASO MA.