Mercury-Mercruiser 92-8M0078630 25W40 4-Cycle, Synthetic Blend Marine Oil 1 Gallon

Mercury SAE 25W-40 Synthetic Blend 4-Stroke Marine Engine Oil 8M0078630 is a genuine Mercury OEM engine oil formulated for use in 4-stroke outboard, sterndrive, and inboard marine engines. This premium synthetic blend provides outstanding protection against wear, corrosion, sludge, and varnish while helping maximize engine reliability and service life in demanding marine environments.

Compatible with the following:

• Mercury 4-stroke outboards
• MerCruiser sterndrive and inboard engines
• Other leading brands of 4-stroke outboard, sterndrive, and inboard marine engines requiring an NMMA FC-W certified SAE 25W-40 oil

This advanced synthetic blend is specifically engineered for marine engines, where high loads, moisture, and extended periods of operation place greater demands on engine oil than typical automotive applications. It maintains viscosity under extreme operating conditions while providing superior protection against corrosion, rust, sludge formation, and varnish buildup.

Unlike conventional automotive motor oils, Mercury's specialized marine additive package is designed to withstand the unique challenges of the marine environment. It meets or exceeds all major marine engine manufacturers' warranty requirements and recommendations for the use of an NMMA FC-W certified marine engine oil.

This package includes one 1-gallon bottle, making it ideal for routine oil changes on many 4-stroke marine engines.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.