Reduce oil consumption and improve fuel economy with SierraFull Synthetic SAE 30 Marine Engine Oil.A special blend of synthetic base oil and a balanced additive system that exceeds the FC-W requirements for marine engine oil. Superior engine protection during startups, operation and storage. Longer lubrication effectiveness than mineral oils. Reduces oil consumption and improves fuel economy. Recommended for gasoline/diesel inboard and stern drive engines. SAE 30.Key FeaturesBalanced additive system that exceeds the FC-W requirements for marine engine oilSuperior engine protection during startups, operation and storageReduces friction and wear for extended engine lifeLonger lubrication effectiveness than mineral oilsReduces oil consumption and improves fuel economyRecommended for gasoline/diesel inboard and stern drive enginesAPI-CF/SL