Sierra 18-9440-3 25W-40 FC-W Synthetic Blend Marine Engine Oil 4 Liter

Sierra's 18-9440-3 is a 4-stroke synthetic blend 25W-40 marine engine oil that provides superior performance in extreme marine environments. Blended with premium grade synthetic and mineral based stock combined with superior designed additives formulated for the extreme marine environment, this formula offers advanced lubrication to reduce wear on internal engine components, along with superior corrosion protection and minimized piston ring deposits.

Key Features:

• Premium synthetic blend formulation designed specifically for outboard and 4-stroke marine engines
• Advanced additives for extreme marine environment protection
• Superior corrosion protection against saltwater and moisture
• Minimizes piston ring deposits and carbon buildup
• NMMA FC-W Certified and API-SL rated
• Extensively tested for outstanding performance
• 4 liter container (approximately 1.06 gallons)

This oil replaces Mercury part numbers 92-883723K01, 8M0078629, 8M0078630, and 8M0078623. Ideal for boaters who demand reliable protection for their marine engines in the harshest conditions.