Synthetic Blend Inboard Engine Oil Quart 25W-40 | Sierra 18-9440-2

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Sierra 1 Quart 25W-40 Marine Engine Oil | 18-9440-2

Synthetic blend 25W-40 engine oil is formulated for stern drive & inboard marine engines.

Sierra synthetic blend inboard engine oil
SAE 25W-40
1 quart bottle
Recommended for gasoline inboard and I/O engines
4-stroke oil is a blend of premium grade synthetic and mineral based stock with highly refined additives
Developed specifically for the marine environment and the high running stresses marine engines encounter
Protects internal engine components from rust, corrosion, and from sticking piston rings
Features high detergency, anti-oxidants, and antiwear proprties
Prevents thermal breakdown under high RPM's, extreme temperatures, and high load conditions
NMMA FC-W certified/API-SL
Replaces Mercury 92-8M0078629