Product Details: Get your truck Ready for the Road Ahead™ with enhanced engine stability, with the Power Service Diesel Fuel Supplement +Cetane Boost Fuel Additive. Thanks to its specialized formula that reduces engine knocking and pinging, this fuel additive is the ideal choice to improve cold diesel engine starts. Crafted with cetane to increase the lubrication in the fuel system. FleetPride is your First Click in Heavy Duty®.