Smoother Than Smooth...Slicker Than Slick...Complete 60,000 Mile Internal Engine Coating made with... DuPont PTFE The Slickest Substance Known. Increases Gas Mileage, Horsepower, Performance, Lubrication, Engine Life. Decreases Friction, Engine Wear, Temperature, Oil Usage, Repair Costs. Motor oil serves two purposes in the engine; it lubricates the parts to reduce friction and it helps to dissipate the heat that results from the friction. The higher the viscosity of the oil, the better the oil lubricates.