Sierra 18-9558-4 5W-30 FC-WCAT Full Synthetic Marine Engine Oil-5 Quart

• Ultra-high engine performance oil that utilizes premium base stocks and industry leading additives
• Enhanced detergent package to suspend and prevent sludge
• Reduces friction to maintain high performance
• High shear stability maintains viscosity, prevent excessive thinning in high performance application
• Advanced ZDDP additive technology prevents phosphorus depletion extending catalyst life

Sierra's 5W-30 FC-WCAT Full Synthetic Marine Engine Oil is an ultra-high engine performance oil that utilizes premium base stocks and industry leading additives. Enhanced detergent package to suspend and prevent sludge. Reduces friction to maintain high performance. Prevents thermal and oxidation break down under extreme temperatures. High shear stability maintains viscosity, prevent excessive thinning in high performance application. Advanced ZDDP additive technology prevents phosphorus depletion extending catalyst life. Meets and/or exceeds FC-W Catalyst and FC-W specifications. Meets or exceeds API SM category requirements.