Over time modern fuel blends can leave behind harmful resins and deposits in your engine, reducing fuel system efficiency and damaging costly sensors. These unwanted build ups can rob power, reduce fuel economy, and increase emissions output, resulting in expensive repairs. The solution is Cataclean. The patented fuel and exhaust system treatment is formulated to restore and protect your vehicle with a simple pour-in treatment. Use Cataclean to help drivability issues such as power reduction, hesitation and hard starts. It can also be used as a pre-treatment before emissions tests and it helps extend the life of your vehicles engine. Cataclean Maintains and Restores Catalytic Converter Efficiency as it works it’s way through the exhaust system helping reduce hydrocarbon emissions. We all know a clean engine is a more efficient engine. Cataclean works to remove carbon deposits built up in the combustion chamber and valve train of the engine. It also helps to eliminate corrosion damage while increasing your vehicles performance. Winter, spring, summer, and fall. A single treatment 4 times a year can help you maintain your engines performance and prevent costly repairs. Cataclean does not alter the fuel composition and is safe for use in diesel engines helping to lower particulate emissions and reducing the risk of (DPF) Diesel Particulate Filter clogging. A perfect choice for diesel powered fleet and over the road vehicles. We also offer a convenient Powersports formula, safe for use in all 4 stroke engines. Use it for all your motorcycle, ATV, and off-road vehicle needs. It’s legal in all 50 states and safe for use in all gasoline, diesel and hybrid engines on the market today. It’s easy, just pop, pour, and go with Cataclean. Cataclean is available anywhere Holley products are sold!