Marine-grade formulations designed to withstand high amounts of water contamination. Contains pressure additives and corrosion inhibitors to protect gears and bearings. Antifoam agents. Helps protect against rust and corrosion. May be used in lower unitscalling for a marine-grade SAE 80W-90 API GL-5, also recommended for lower units requiring an SAE 90 Hypoid gear oil. SAE 80W-90.