Engine protection that takes the checkered flag. Supreme 9000 Full Synthetic Racing Oil is engineered with severely hydrofinished PAO synthetic base oils, severely hydrocracked synthetic base oils, a proprietary additive package, two proven friction modifiers and a viscosity index improver. This unique blend provides engines ultimate protection against higher operating temperatures and increases engine efficiency. Even as temperatures heat up, this full synthetic oil resists thinning and breaking down. Like other Schaefferâs Racing Oils, this oil helps keep engines exceptionally clean, and offers strong protection against sludge and deposits that form when engines run hot.