Lucas Motor Oil Additive Heavy Duty Oil Stabilizer Synthetic 946ml 10130Light enough for an import Tough enough for a semi. Use in new equipment which requires synthetic oils or any equipment that needs enhanced performance. It can also be used to protect new and used Heavy Duty and High Performance transmissions, gear boxes and engines. Controls heat and wear in motorcycles, air cooled engines and all drive train components. Reduces friction for increased power and MPG.