Maxima Racing Oils 30-11901 20w50 V-Twin Full Synthetic Engine Oil - 32 fl. oz. Maxima V-Twin Full Synthetic is an ester based full synthetic motorcycle oil engineered and approved to be used as a multi-compartment oil for H-D V-Twin engines, transmissions and primaries Surface-active ester technology lowers operating temperatures, reduces wear, increases film strength and offers extended protection Regenerative polymer system resists mechanical shearing and heat breakdown of the oil offering exceptional viscosity retention in severe climates V-Twin Full Synthetic is Ultra-clean additive package keeps engines clean, protects against sludge and allows for trouble-free operation Available only in 20w50