Mobil 1 is a range of very high quality motor oils produced by mobil. the 0w-40 grad offers a universally applicable specification of synthetic motor oils which can be used on any brand of vehicle or engines that require synthetic oils. it contains detergents and additives the cleans, detoxifies and keepsyour engine running like new while it performs the basic function of lubrication and friction reduction in your engine.it is a premium grade of synthetic motor oil