CATALYST OIL 4STK 10W30 55GA

Sierra 10W-30 Catalyst Engine Oil is designed for use with 4-stroke engines with or without emission catalyst systems. It is approved for all 4-stroke applications including outboard, sterndrive and inboard, exceeding all 4-stroke requirements including FC-W and FC-W Cat Compatibleprovides maximum corrosion protection. This formula includes "ZDDP" anti-wear additive to prevent phosphorus depletion. NMMA FC-W Certified.