Stanadyne Diesel Lubricity Formula - 64 Oz - Case of 6 bottles.  Each Bottle treats 500 Gallons of Diesel Fuel. Approved by Original Equipment Manufacturers (OEMs) Five times more lubricating content than other Stanadyne additives Recommended when excessive wear is a problem Cleans and protects injectors and all fuel systems components Fights formation of corrosion and rust