If you’re looking for a fuel tank additive and only the fuel injectors need attention, then Berryman B-12 Chemtool Fuel Injector Cleaner (part #1112) will satisfy your needs. However, intake valves tend to have deposit buildup, which can lead to rough idle and poor acceleration. In these cases, we recommend B-12 Chemtool Concentrated Intake Valve & Injector Cleaner (part #3012). Both products will treat up to 20 gallons of gasoline.