Champion “Classic & Muscle” Motor Oil is built specifically to meet the lubrication demands of hot rod, street rod, classic and muscle car engines, especially those using flat tappet and roller cams operating at high RPMs and requiring high-pressure valve springs. To meet these demands, Champion utilizes its premium ZDDP anti-wear protection package, which contains a unique balance of chemistry that includes high levels of zinc and phosphorus. In addition, all Champion “Classic & Muscle” Motor Oils contain an exclusive TVS® (Thermal Viscosity Stabilizer) technology. This proprietary technology delivers unmatched film strength at high temperature, better piston ring seal for maximum compression, and increases horsepower and torque in most engines.