Mobil 1 V-Twin 20W-50 is an advanced full synthetic motorcycle oil formulated for four-cycle, air-cooled V-Twin type motorcycle engines that tend to run hotter than other types of engines. Helps to provide excellent performance by protecting against engine wear, transmission components wear, and enhanced lubrication to maintain maximum power and acceleration over the life of the engine. Mobil 1 V-Twin delivers optimized wet-clutch performance and superb shear stability to help resist viscosity shear down. Helps to resist oxidation and degradation at high temperatures, while minimizing engine wear at low-temperature startup. Meets or exceeds the requirements of API SJ.