CRC MOTOR TREATMENT cleans and lubricates internal fuel and oil systems for a smoother running engine, increased MPG, restored power and reduced emissions. Carbon, a byproduct of combustion, is typically expelled through the exhaust system but check out the pics in this video to see what can be happening inside your fuel system and crankcase. Carbon deposits in your engine can be a SERIOUS problem. Add CRC MOTOR TREATMENT to your fuel and oil for a smoother running engine and RESTORED POWER!