Does gasoline really need detergents?
Yes! Detergents are added to gasoline to help keep vital engine parts clean, including the carburetor or fuel injectors, intake valves and intake port areas. A gasoline detergent is a lot like a household detergent, helping to prevent any harmful deposit build-up. Gasoline detergents can do such a great job at keeping critical engine components clean that the Environmental Protection Agency (EPA), through the Clean Air Act, has required them to be added to all gasolines since 1995.