Mercury 25W-40 4-Stroke Conventional Marine Oil - MW
Mercury 25W-40 4-Stroke Conventional Marine Oil
Maintain peak engine performance and reliability with Mercury 25W-40 Marine Engine Oil. This oil outperforms automotive oils in marine applications because of its specialized additive package designed for marine engines. Mercury engine oils provide outstanding wear and corrosion protection to extend engine life. This oil also eliminates thermal breakdown under extreme rpm, temperature, and loads. Use with Mercury oil filters for better performance, reliability, and trouble-free operation.
This oil will not damage emissions systems and can be used in any marine engine equipped with or without a catalytic converter. Exceeds oil requirements and FC-W Catalyst Compatible qualifications for all marine engines.
Benefits of using OEM Mercury Engine Oil
- For use in 4-cycle outboard, sterndrive, and inboard engines
- Superior corrosion protection
- Most recommended OEM marine engine oil
- Use of this oil will not voice manufacturer warranties
Sizes Available:
- Quart
- Gallon
How much oil does my engine need?
It varies model to model, check out our Mercury and MerCruiser oil capacity guides for more information and capacity charts!
Special Order Mercury Marine Information:
- Additional Handling Time: Item transfers from an alternate warehouse requires an additional 1–3 business days to ship.
- Non Returnable: This item is ordered specifically for your application and cannot be returned or canceled once processed.
- Verify Fitment Before Ordering: Please confirm compatibility with your engine model.
WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov


