Lucas Synthetic SAE 10W-30 Racing Oil is made with the highest quality synthetic base oils and is fortified with a unique additive package containing high levels of zinc, molybdenum and phosphorus, which provides a tougher, thicker additive film for maximum protection even under the most severe conditions. It lowers oil temperatures, extends oil life and minimizes metal fatigue. It improves the film strength between the cylinder wall and piston rings and slows oil burning and improves pressure in worn engines. It has excellent cold temperature properties and stands up to high operating temperatures. Lucas Synthetic SAE 10W-30 is compatible with methanol and all racing fuels. It is compatible with synthetic and non-synthetic oils. Lucas Synthetic SAE 10W-30 Racing Oil is typically used in NASCAR, Late Model, Super Late Model, ARCA, Modifieds, Sprint Cars, Midgets, NHRA, Stock, Super Stock, Comp and Super Comp. Excellent for use with turbo charged engines. Lucas Synthetic SAE 10W-30 is for RACING APPLICATIONS ONLY. It is not recommended for passenger car use.