Bardahl 1511-CS Engine Power Booster - 12 fl. oz.  (Case of 12) Reduces friction and wear to improve gas and diesel engine power and performance Inhibits oxidation to reduce formation of sludge, gum and varnish deposits Synthetic oil stabilizer increases oil viscosity to decrease oil consumption and lower emissions Special dispersant additive helps prevent soot build-up in diesel engines Extra protection for engines using low sulfur diesel fuels