After adding the petrochemical Hailong refueling treasure, the cold car shivered.

Occasionally, the car body shakes because the fuel containing fuel treasure collects clean deposits and carbon deposits at the bottleneck of the fuel system, leading to local embolism and poor fuel supply. As long as you step on the gas pedal, you won't have this phenomenon after washing. The exhaust pipe sometimes emits black smoke and the body shakes, which shows that fuel treasure really works. This is a normal phenomenon. With the use of 3-5 cases of fuel containing fuel treasure, this phenomenon will gradually disappear.