Mobil Special 20W-50 is a high performance motor oil for all types of vehicles.Mobil Special 20W-50 delivers engine protection and cleanlines. Mobil special 20W-50 is recommended for use in a wide range of applications and operating conditions.Mobil Special 20W-50 is recommended for gasoline fueled automobiles and light duty trucks where a higher viscosity API SM,SL,SJ oil is preferred or recommended for use in applications requiring:API SG/CD and Jaso MA.