This Shell Rotella T Triple Protection Heavy Duty Engine Oil is a versatile conventional motor oil formulated with advanced additives to provide up to 50% less engine wear and enhanced engine cleanliness and viscosity control. Designed to control piston deposits in late model engines this 5-gallon oil with an SAE 15W-40 viscosity rating can help extend the life of your engine. It offers energized protection in three critical areas: acid control deposit control and wear control making it a reliable choice for your vehicle s maintenance.