Starting Fluid can help extended the life of the battery in your 2003-2004 Dodge 5.9L Diesel. Safe for use in your diesel or gasoline-powered lawn care equipment, generators, outboard motors, and and automobile applications. This product is safe for most of engines due to an upper cylinder lubricant and works down to -65 degrees Fahrenheit. Keep your vehicle on the road with top manufacturers such as like Lucas Oil from XDP!