AMSOIL 10W-40 100% Synthetic Marine Engine Oil

FIGHTS ENGINE WEAR Naturally strong base oils resist viscosity loss due to mechanical shear. Develops a tough lubricating film that protects engine parts, even in high-heat, high-rpm conditions that break down other oils. Contains robust anti-wear additives that further reduce wear in metal-to-metal contact regions, guarding against compression loss for maximum power and engine life. EXCELLENT ANTI-RUST PERFORMANCE Fortified with potent inhibitors that guard against damaging rust and corrosion. Protects engines during use and during inactivity or long-term storage.