Keeps your engine clean and responsive. Formulated to meet or exceed: Manufacturer: Chrysler; Specification: MS-6395. Manufacturer: Ford; Specification: WSS-M2C946-A. Meets oir exeeds the requriements of ILSAC GF-5, API SN Plus, API SN and all previous categories. Pennzoil Lubircation Limited Warranty available on all products. pennzoil.com. For Gasoline Engines: American Petroleum Insititute Certified. Made in USA of domestic and imported-components.