5W-30 FULL SYNTHETIC FC-WCAT (55 GA

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. It features an enhanced detergent package to suspend and prevent sludge, reduces friction to maintain high performance, and prevents thermal and oxidation breakdown under extreme temperatures. The oil maintains high shear stability to prevent excessive thinning in high-performance applications and includes advanced ZDDP additive technology to prevent phosphorus depletion, extending catalyst life. It meets and/or exceeds FC-W Catalyst and FC-W specifications, as well as API SM category requirements.