Modern motor oils have low levels of friction-reducing zinc and are not suited for harsh racing conditions. Champion Racing XP Synthetic Blend Engine Oil is specifically formulated for competition engines that use high octane gasoline or exotic racing fuels. High levels of zinc (ZDDP) anti-wear additive. Dyno proven to increase horsepower by reducing friction. Offers film strength and viscosity stability at higher temperatures. Formulated for the protection of flat tappet cams, roller cams and bearings in supercharged racing engines. Increases high-temp oil pressure and compression. Compatible with all racing fuels including methanol. Provides upper cylinder anti-wear protection. Reduces engine oil temperature. Compatible with other petroleum and synthetic oils. Sold in 12 quarts. Ideal for sprint cars, midgets, stock cars, dragsters and other extreme-duty applications. Also works great for breaking in new engines. Oil Filter Spin-On Lube Filter. Full flow. 5.178"" height. 3.66"" diameter. 13/16""-16 thread size. 28 GPM max flow rate. 61 micron rating.