The Rislone Hy-per Diesel Fuel System Treatment, No. 4740, is designed to improve the quality of diesel fuel by increasing its cleaning ability, boosting cetane, adding lubrication, removing contaminants, fighting corrosion, and helping to prevent the fuel from gelling and going bad. It also eliminates black smoke, clogged injectors, rough idle, and hard starts. It works with ultra-low sulfur diesel, regular diesel, and biodiesel fuel blends, as well as direct-injected, indirect injected, turbo direct-injected, high-pressure common rail, and turbocharged engines. It features a patented disposable spout that is designed to fit only diesel fuel tanks, preventing the product from being accidentally installed in a gasoline system.
