Maxima (359128) Premium4 20W-50 Motorcycle Engine Oil - 1 Gallon Jug Maxima's Premium4 is a superior product featuring advanced additive technology in the development of highly stable and long life multi-grade motorcycle specific oil By using an exclusive blend of petroleum base stocks and advanced anti-wear, anti-shear additives, this product assures viscosity stability for all air and water-cooled 4-cycle engines with integrated transmissions This formula also has extra anti-scuff additives to handle extreme loads and peak temperatures in high performance engines Formulated for Wet clutches, the all weather formula reduces friction and engine temperatures and makes for easier starts Crafted from a premium petroleum base, Premium4 is Turbo certified, exceeding all JASO-MA M/C 4T and API SG/CC Specs