Penn-Grade 1 Partial Synthetic SAE 10W-30 Racing Oil is designed for use in both on- and off-road high performance gasoline engines.  Typical applications include stock-car and drag racing engines, SUVs, pick-up trucks, and other highly stressed engine applications.  It reduces internal friction, increases horsepower output, and provides excellent wear protection.  It includes a PAO synthetic component, meets API service categories SJ/CF, has a typical TBN of 10.2, and provides a high level of detergency for additional protection in higher revving, hotter running engines. 12 Quart Case.