Maximas PWC Marine 4T is a superior product featuring advanced additive technology in the development of highly stable and long life multi-grade PWC specific oil. By using an exclusive blend of petroleum base stocks and advanced anti-wear, anti-shear additives, this product assures viscosity stability for 4-cycle engines. This formula also has extra anti-scuff additives to handle extreme loads and peak temperatures in high performance engines. Exceeds FC-W specifications and all known OEM requirements.