Sierra 9440CAT4 Synthetic Blend 4-Cycle Inboard-Sterndrive Engine Oil, 25W40 FCW, 5 Qt.

A special blend specifically designed to meet the unique requirements of modern 4-stroke recreational engines with or without emission catalyst systems. Sold in case packs only.

• NMMA FC-W® Certified/API-SL.
• Minimizes corrosion that is formed inside the engine.
• Displays enhanced detergent and dispersants properties to suspend and prevent engine sludge formation.
• Industry leading wear protection and deposit control.
• Prevents excessive thinning under extreme performance operations.
• Capitalizing on "ZDDP" anti-wear additive technology to prevent phosphorus depletion and extend the emission catalyst life.