Marine engines operate in a harsh, corrosive environment that demands specialized protection you can’t find in an automotive oil. Keep your engine operating at its peak with Mercury SAE 25W-40 4-Stroke Marine Engine Oil 8M0078628. In addition to superior strength and viscosity retention, it features a specialized additive package that helps prevent corrosion, on and off the water. This oil is recommended for use in all 4-stroke outboard, sterndrive and inboard engines, where 25W-40 is called for. It exceeds all marine industry requirements for 4-stroke oil and is certified FC-W and FC-W Catalyst Compatible.
Key Features
- For use in Mercury, MerCruiser and other leading brands of four-stroke outboard, sterndrive and inboard marine engines
- Provides outstanding wear and corrosion protection to help extend engine life
- Industry-leading strength and viscosity retention
- Exceeds all marine engine manufacturer warranty requirements and recommendations and is certified FC-W and FC-W Catalyst Compatible
- Produced by Mercury Marine to our stringent original equipment manufacturer specifications
- Mercury oils, lubricants and engine care products are backed by decades of experience in engineering, testing and manufacturing to provide the best protection and performance.
Fitment / Application
For use in 4-cycle outboard, sterndrive and inboard engines.



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