The E-Z Oil Diesel Aid Fuel Additive is a powerful fuel additive designed to improve the performance of diesel engines. This fuel additive increases lubricity, improves cold flow and cleans the fuel system. It also emulsifies water to prevent fuel system failure and enhances fuel economy. This fuel additive disperses water in fuel tanks, ensuring your diesel engine runs smoothly and efficiently. FleetPride is your First Click in Heavy Duty®.