Fully synthetic straight 30 weight engine oil is formulated for inboard & stern drive marine engines.
- Sierra full synthetic inboard engine oil
- SAE 30
- 5 quart bottle
- Recommended for gasoline and diesel inboard and I/O engines
- Developed specifically for the marine environment and the high running stresses marine engines encounter
- Reduces friction and wear for long engine life
- Beter lubrication effectiveness for longer durations than mineral oils
- Reduces oil consumption and improves fuel economy
- Exceeds all FC-W requirements
- API-CF/SL