Supreme 7000 Synthetic Plus Racing Oil 10W-30 is a premium quality high zinc racing oil engineered from severely hydro treated PAO synthetic base oils, severely raffinate hydro converted Group II Plus, a proprietary additive package, proven friction modifiers Micron Moly and Penetro and a viscosity index improver. Blended with extra zinc, Schaeffer's Supreme 7000 Synthetic Plus Racing Oil protects critical engine parts from wear and deposit buildup. Schaeffer's Supreme 7000 Synthetic Plus Racing Oil is formulated for use in all types of gasoline engines including flat tappet cams, turbocharged and supercharged. Supreme 7000 Synthetic Plus Racing Oil SAE 10W-30 is particularly recommended for use in crate circle track engines found in late model series race cars and can also be used in diesel powered multi-valve fuel injected engines typically found in light-duty diesel passenger cars and tractor pulling applications.