Yamalube® 4M 20W-40 FC-W® Outboard Engine Oil Warm-Climate Formulation for Marine Four Stroke Engines.
- Yamalube 4-M surpasses Yamaha factory requirements
- Superior formulation for a higher level of bearing protection
- Superior rust and corrosion resistance
- Polymers that resist breaking down even under the severe high load, high speed conditions common to outboards, water vehicles and sport boats
- More anti-wear additives than regular passenger car motor oils
- And the highest amount of detergents and dispersants, needed to keep your marine engine clean inside.