Product Details: Outfit your truck to be Ready for the Road Ahead™ with enhanced engine stability, with the Seafoam Diesel/Gas Motor Treatment Fuel Additive. This fuel additive improves cold starts, reduces engine knocking, and provides long-term storage capabilities for diesel engines. Once added to the system, it keeps fuel fresh for extended periods of time. <br/><br/>FleetPride is your First Click in Heavy Duty®.