Certified FC-W and FC-W Catalyst Compatible by the National Marine Manufacturers Association. Industry leading strength and viscosity retention and the ultimate corrosion and wear protection. Quicksilver is the most recommended marine oil. For use in all marine engines, including outboard, inboard, and stern-drive, which specify this viscosity of oil. Proven protection for over 75 years. Quicksilver four-stroke marine oil is recommended by Mercury Marine, the number one marine engine manufacturer in the world. Regular use of this OEM oil protects your investment and maximizes engine performance in marine engine applications.
Quicksilver 25W-40 4-Stroke Marine Oil:
- Strength and viscosity retention
- Ultimate corrosion and wear protection
- For use in all 4-stroke marine engines