Before completely replacing the antifreeze, it is necessary to conduct a comprehensive inspection to see if there are any signs of leakage and cracks in each pipeline. The key is to check the five-way water pipe. After the antifreeze flows through the five-way pipe, it is distributed to different parts of the car to play a role. If there is antifreeze leakage in this part, replace the water pipe or re-fix the interface according to the situation.
Drain the old antifreeze, and then clean the liquid channel with clean water. Add clear water to the antifreeze replenishment tank, then inject clear water into the tank to make the clear water continuously flow through the engine cooling system, and then idle for 3 to 5 minutes to circulate water. The water that starts to flow out of the pitcher is a little pink. Continue to inject clean water until the water flows out clean. Be careful not to forget to remove the heating water pipe and drain the water in the heating water tank.
Net.