EXTREME CMT is a additive that uses Nano Technology to be use in engine oils or gear lubes of any type for manual transmissions and rear end gears to treat the internal metal parts it comes in contact with. Its abilitiy to reduce friction in engines and gear type unit is "extreme", therefore increasing the life of whatever you put it in. It also works great in small air cooled engines, air compressors, motorcycles, marine engines, outdrive units, farm equipment, lawn equipment and guns as well as many other applications. It has shown better fuel mileage and performance in fleets and many different race applications by top racers and companies across the country. Caution: Not designed or intended for use in automatic transmissions, posi units or anything with a wet clutch.