Synthetic blend 25W-40 engine oil is formulated for stern drive & inboard marine engines with catalyst emission systems.
- Sierra synthetic blend catalyst inboard engine oil
- SAE 25W-40
- 1 quart bottle
- Recommended for use with inboard and I/O marine engines with catalyst exhaust systems
- Meets the requirements of modern 4-stroke recreational inboard, I/O, and outboard engines with or without emission catalyst systems
- Developed specifically for the marine environment and the high running stresses marine engines encounter
- Protects internal engine components from rust and corrosion
- Features high detergency, antiwear proprties, and dispersants to prevent engine sludge
- ZDDP anti-wear additive prevents phosphorus depletion and extends the emission catalyst life
- NMMA FC-W certified/API-SL
- Replaces Mercury 92-8M0078629
