25W-40 FC-W Synthetic Blend Catalyst Oil, 5 Qt. | 18-9440CAT-4

Capitalizing on "ZDDP" anti-wear additive technology for maximum corrosion protection, this formula offers advanced lubrication and deposit control for extended engine life and prevents phosphorous depletion. It is NMMA FC-W/API-SL certified and approved for all 4-stroke applications including outboard, sterndrive, and inboard.