Replacement steps of antifreeze:
1, first do a comprehensive inspection to see if there are cracks and leaks in the pipeline, with the focus on the five-way pipe (named because there are five interfaces connecting all parts). The antifreeze must flow through the five-way pipe and then be distributed to different parts of the car to play its role.
2. Drain the old antifreeze, and then inject clean water into the fuel tank, so that the clean water can continuously flow through the engine cooling system, while idling for 3 to 5 minutes, so that the water can circulate until the clean water flows out. Don't forget to remove the heating water pipe and clean the water in the heating water tank.
3. After draining about 1 hour, add new liquid from the water pipe of the water tank (radiator), and then add another bucket of antifreeze to the liquid storage tank until it is almost full. Set fire to the car 10 minutes or so, and let the antifreeze circulate and exhaust. The liquid level will drop after flameout, so it is necessary to replenish antifreeze to the maximum (max) and minimum (min).