Sierra 10W-40 Semi Synthetic FC-W Oil 1 U.S. GALLON

Sierra 10W-40 Semi Synthetic FC-W Oil is specially formulated to protect marine engines from wear and corrosion. This oil is designed to meet or exceed the requirements of the FC-W Cat 4 specification and offers improved performance in both diesel and gasoline engines. It can provide superior protection and outstanding performance in extreme cold and hot temperatures.