Star brite's Star Tron Ring Clean is formulated with the latest technology deposit control compounds, plus a proprietary enzyme package designed to remove existing deposits and prevent the formation of new deposits in your engine. Star Tron improves fuel combustibility to keep engines clean and operating at peak performance levels. Ideal for removing deposits caused by ethanol-blended fuel, the formula keeps carburetors, fuel injectors, intake ports, and combustion chambers clean. Works in all gas and diesel engines. Use every time fuel is added to keep engines in optimal condition.