The Keltner Carburetor Cleaner is a powerful and effective cleaner designed to quickly dissolve and remove deposits from the carburetor and choke. This cleaner is designed to improve performance and fuel economy by quickly dissolving gum, sludge and varnish that can build up in the carburetor and choke. It is also harmless to oxygen sensors and catalytic converters, so you can be sure that your engine is running at its best. It is easy to use and will quickly dissolve deposits on vents, links, butterflies and PCV systems. With regular use, you can restore power and performance to your engine and keep it running smoothly. FleetPride is your First Click in Heavy Duty®.