Replacing the antifreeze does not require turning on the heater. Remove the heater water pipe and drain the water in the heater water tank, so the heater cannot be turned on.
Precautions for replacing antifreeze (no need to turn on the heater):
1. Before completely replacing the antifreeze, make a comprehensive inspection to see if there are any defects in each pipe. There are no traces of leakage or cracks. The key point is to check the five-way water pipe. The five-way pipe is named because it has five interfaces connecting various parts. The antifreeze is distributed to different parts of the car after flowing through the five-way pipe. Partially works.
2. Select the freezing point of the antifreeze according to the ambient temperature conditions. The freezing point of antifreeze is one of the most important indicators of antifreeze and an important condition for whether antifreeze can prevent freezing. The freezing point of the antifreeze should be selected according to the local environmental conditions and the lowest winter temperature of -10°C to 15°C.
Extended information:
Precautions for using antifreeze:
1. Antifreeze must be changed every two years
Because of the The validity period is two years. Expired antifreeze will cause corrosion of the cylinder block, and even serious damage to the engine. In addition, the freezing point of antifreeze is around -25°C. If you go to a colder place, you need to replace the antifreeze with a lower freezing point.
2. Antifreeze with anti-rust, anti-corrosion and descaling capabilities should be used. The most important thing about antifreeze is to prevent rust. Therefore, it is advisable to choose famous brand products. These products contain preservatives, corrosion inhibitors, anti-scaling agents and cleaning agents, and the product quality is guaranteed.
Reference material: People's Daily Online - Tips for driving in cold weather: Antifreeze must be changed every two years
Reference material: Baidu Encyclopedia - Antifreeze