Starbrite - Star Tron Ring Clean+ - 16 oz - 95616Star Tron Enzyme Formula Ring Clean+ is formulated with the latest technology for deposit control, plus a proprietary enzyme package designed to remove the toughest deposits while helping to prevent the formation of new deposits. Ring Clean+ removes deposits from fuel injectors, carburetors, intake valves, intake ports, and combustion chambers that can lead to engine knock, stuck piston rings, dirty spark plugs, lost power, decreased performance and