The Electric-controlled fueling injection equipment is one of the key parts of the high grade automobiles. As the impurities in the oil and oxides after the burning of gasoline may form oil scale in the oil circuit and around injection nozzle, which seriously affects the normal work of the engines( the traditional way is to change the nozzle). This product is a specially made cleaning agent added in the gasoline and it can quickly remove various oil sludge and impurities in the electric-controlled fueling injection equipment of the automobiles in the course of driving so as to prevent and control the production of deposits of the engines, keep the fuel system clean, minimize the discharge pollution and prolong the service life of the engine.