The Miscellaneous Parts 55-Gallon Fuel Additive is designed to help prevent fuel gelling in cold temperatures and ensure your engine starts and runs smoothly in extreme weather conditions. This fuel additive is specifically formulated for diesel fuel applications and has a specific gravity of 0.92. With this fuel additive, you can rest assured that your engine will run optimally in any weather condition. FleetPride is your First Click in Heavy Duty®.