Jump to BestLine Premium Synthetic Engine Treatment - Top Rated Oil Additives: Sea Foam sf16. Previous. Archoil AR9100. See More Reviews. Liqui Moly Cera Tec Friction Modifier. Previous. Lucas Heavy Duty Oil Stabilizer. See More Reviews. Genuine Ford Fluid XL-3 Friction Modifier. See More Reviews. Red Line Break-In Oil. See More Reviews. BG MOA Oil Supplement. Rev X Fix . Sep 24, 2013 - What can an engine oil treatment do for you? Here's what . There are numerous factors that go into getting more MPG out of your car. We've . Save on Engine Oil Treatment & Additives with great deals at Advance Auto Parts. Buy online, pick up in-store in 30 minutes. It can be used in all cars, trucks and SUVs. STP® 4-Cylinder Oil Treatment (in the red bottle) also helps protect against engine wear by increasing oil viscosity, which provides a thicker cushion of oil between moving engine parts and reduces metal-to-metal friction. Car Engine Image Gallery Aftermarket engine oil additives claim to improve performance and make your engine run cleaner. See more car engine pictures. STP®Oil Treatment Petrol For extra engine protection. STP® Oil Treatment Petrol fortifies motor oil with an extra measure of additives which includes viscosity improver plus anti-wear, anti-friction and anti-oxidation agents. Buy TriboTEX Oil Additive Car Engine Treatment: Add to Engine Oil - Makes High Mileage Cars Like New with a Synthetic Material (Treats One Regular Car, . Lucas Complete Engine Treatment is a unique formulation that cleans and lubricates multiple systems in your vehicle. . When added to your oil, Lucas Complete Engine Treatment cleans your engine and forms a protective barrier against .