The Lucas Oil Heavy Duty Oil Stabilizer is a powerful oil additive that helps to reduce friction, heat and wear in your engine. It is designed to eliminate dry starts and increase oil life by at least 50%. It also helps to increase power and miles per gallon, making it an ideal choice for those looking to maximize their engine's performance. this oil stabilizer is designed to be used in all types of engines. It is also compatible with all types of motor oils, including synthetic and conventional. FleetPride is your First Click in Heavy Duty®.