How to replace the automobile antifreeze?
1. Before the antifreeze is completely replaced, it is necessary to make a comprehensive inspection to see if there are traces of leakage and cracks in each pipeline. The key point is to check the five-way water pipe, which is named because it has five interfaces to connect all parts. 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.
2. Drain the old antifreeze, and then clean the liquid channel with clear 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 began to flow out of the pitcher was a little pink. Continue to inject clean water until it flows out. Be careful not to forget to remove the heating water pipe and clean the water in the heating water tank.
3. After draining about 1 hour, add new antifreeze from the water pipe of the water tank (radiator), which is the way to make antifreeze flow into the water tank quickly. Then, add another bucket of antifreeze into the antifreeze tank until the antifreeze tank is almost full, and keep running for about 10 minute. At this time, due to the exclusion of some air, the liquid level of the cooling system drops, and then antifreeze is added until the highest mark "MAXT" of the oil storage tank is filled.
Selection method of antifreeze
1. Select the freezing point according to the ambient temperature of the car. Freezing point is an important index of antifreeze, which should be about 10 degrees lower than local environmental conditions in winter.
2. Choose antifreeze according to different requirements of different vehicles;
3. Choose antifreeze with antirust, anticorrosive and descaling capabilities.