Performance additives. Helps save gas. Prevents deposits. Helps Clean & Protect Your Fuel System: Fuel injectors, carburetors. Helps save gas. Keeps fuel injectors, carburetors, intake valves & ports clean for a smooth running engine. Reduces emissions. For technical questions or comments, call 1-855-888-1990. www.gumout.com. Made in the USA of foreign and US components.