SYNTHETIC CATALYST OIL 4S 25W-40

Sierra 25W-40 Synthetic Catalyst Engine Oil is designed for use with 4-stroke engines with or without emission catalyst systems. It provides maximum corrosion protection and includes "ZDDP" anti-wear additive to prevent phosphorus depletion. It also has an enhanced detergent and dispersants properties to stop and prevent engine sludge formation. NMMA FC-W Certified/API-SL.