Cataclean Catalytic Converter & Fuel System Cleaner (16 oz) - 6 Pack

For shops, fleet managers, or vehicle owners who want to stock up, this 6-pack of Cataclean provides six 16 oz bottles of the same EPA-approved fuel and exhaust system cleaner. At the recommended quarterly usage, six bottles covers a year and a half of maintenance for a single vehicle, or you can spread them across multiple vehicles in a household or fleet.

Each bottle of Cataclean reduces carbon buildup throughout the engine, fuel system, and exhaust path, targeting catalytic converters, oxygen sensors, fuel injectors, and cylinder heads. Independent emissions testing has shown the formula lowers total hydrocarbon emissions by up to 50 percent, making it a practical treatment before emissions inspections. The formula does not alter fuel composition and is safe for oxygen sensors and catalytic converters.

Application stays the same for each bottle: pour one full 16 oz bottle into roughly a quarter tank of fuel, then drive for at least 15 minutes. Cataclean works in gasoline engines and is legal in all 50 states. For vehicles with capless fuel systems, use the manufacturer-supplied funnel when pouring.