Royal Purple 0W-40 meets API SM and CF warranty requirements, as well as ACEA A3/B3-04 European warranty requirements. 0W-40 has become an increasingly common viscosity specification and is specified for numerous makes including Audi, Chrysler, Dodge, Jeep, Jaguar, Mercedes-Benz, Porsche and VW. 0W-40 is suitable for gasoline and light-duty diesel applications. Royal Purple specially formulated their SAE grades to be suitable for engines from trucking to general transportation. Excellent for today's turbo, supercharger and even warranty motors. Motors stay cleaner and cooler, resulting in better gas mileage, superior engine protection, and longer oil life. Now API certified.