SYNTHECH SUPER MOTOR OILS SAE 0W-20 / 0W-30 / 0W-40 / 5W-20 / 5W-30 5W-40 / 5W-50 / 10W-30 / 10W-40 / 20W-50 API SN/CJ-4, SN/CF, SM/CF LUBENZ PRO TECH SM series is designed with synthetic base stocks and an advanced technology additive system to provide a very high level of engine protection and performance. It is suitable for higher mileage gasoline and diesel-fueled automobiles and light-duty trucks requiring an API SM/CF specification, where very high viscosity index oils are preferred to provide longer oil drain intervals in modern engines. It provides maximum protection in engines operating under severe conditions, including high-performance turbo-charged, supercharged gasoline, and certain diesel multi-valve fuel-injected systems. for more information, please contact us.