60103 SI-1 Complete Fuel System Cleaner - 15 Ounce- Fuel Injector Cleaner and Carburetor Cleaner for Corrosion Prevention and Injector, Valve, and Combustion Chamber Deposit Removal. PERFORM AND PROTECT: Fuel additive cleans injectors, carburetors, valve and combustion chamber deposits with a powerful, concentrated blend of high-temp and low-temp detergents.