Our Heavy Duty Cleaner contains surface activators, chelators and penetrants. It can remove carbon deposits and deposits in the pipes, helping to restore the normal operation of the engine and exhaust system. Its use method is very simple: first spray the product evenly on the pipe, then wipe it back and forth with a sponge, and finally wipe it clean with a towel. It can reduce the wear of mechanical parts and extend the service life of the car.