Effective Cleaning - Removes dirt, residue and deposits that can adversely affect the performance of throttles and carburetors. Helps in Performance Improvement - lubricates throttle bodies and carburetor assemblies to help restore maximum operating efficiency Multi Part cleaner - It cleans throttle body assembly, carburetors, automatic chokes, linkages, and PCV valves very well. It leaves no residue on exterior surfaces. Sensor Safe - Safe on Oxygen Sensors