Yamalube 4M is a mineral-based four-stroke outboard engine oil that's an approved NMMA® FC-W® formulation specifically for use in the harsh marine environment.
The FC-W® rating, which sets the minimum standard for outboard engine lubrication,
- corrosion protection, and resistance to potentially harmful effects of oil dilution caused by fuel, provides critical assurance that your outboard’s oil meets the minimum.
- Go it one better. Yamaha’s exclusive and proprietary additive package means Yamalube 4M meets or exceeds the industry standards for lubricity and corrosion protection.