Reduces Friction and Wear; Sludge Cleaning Additives; Conditions & Reduces Engine Leaks. Performance without compromise: At PEAK, we're the independent guys running a family owned business that's nothing like Big Oil. Here, American-made quality and value go into good, honest oil, with everything your engine needs to run right for the long haul. Exceeds U.S. and import car and light truck warranty requirements for all automotive gasoline engines currently in use where a SAE 10W-40 that meets API SN, ILSAC GF-5 and previous API/ILSAC Standards is specified. For Engines over 75,000 Miles Made in the USA API Service SN Made in the USA