Product Description
Sierra Premium Blend 25W-40 Catalyst-Compatible Marine Engine Oil
This Sierra Premium Blend Engine Oil meets modern recreational 4-stroke engines with or without emission catalyst systems. Sierra 25W-40 is approved for all 4-stroke applications including outboard, sterndrive, and inboard.
Features:
- Exceeds all 4-stroke requirements including FC-W and FC-W Cat Compatible
- Formulated to offer maximum corrosion protection
- Advanced lubrication for extended engine life and wear protection
- "ZDDP" anti-wear additive technology
- Prevents phosphorus depletion and extends the emission catalyst life
- NMMA FC-W Certified
Interchangeable with:
- Mercury Marine
- 92-8M0078627
California Residents: 
WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
