The function of the cooling system is to dissipate part of the heat absorbed by the heated parts in time to ensure that the engine works at the optimum temperature. The cooling of the engine is divided into air cooling and water cooling. The cooling system using air as a cooling medium is called an air cooling system, and the cooling liquid as a cooling medium is called a water cooling system. According to the survey, more than 50% of the world's car engine failures come from the cooling system! This shows the importance of a reasonable choice of antifreeze.
First, the basic requirements for the use of antifreeze
1. The lower the freezing point, the better. The basic indicators of antifreeze are freezing point and boiling point. In the autumn and winter seasons, you should choose to use antifreeze with low freezing point. The lower the freezing point, the stronger the antifreeze performance of the antifreeze. Normally, the freezing point of the selected antifreeze should be lower than the local minimum temperature of 10 °C in case of sudden weather changes.
2, should pay attention to anti-corrosion function. At present, there are many types of antifreeze on the market, and the quality is inevitably mixed. The antifreeze produced by the general minor and the factory is only put on the market after the freezing point of the antifreeze is measured. These products that have not been regularly tested are often corrosive to the automobile. Damage caused by the cooling system, some antifreeze will also corrode the tank and flow into the engine, causing a big accident. Therefore, users are advised to choose a regular brand of antifreeze.
Second, the need to pay attention to the use of antifreeze:
1: Try to use the same brand of antifreeze. Different brands of antifreeze production formulas will be different. If mixed, chemical reactions may occur between various additives, causing additive failure.
2: Antifreeze is valid for two years (the length of some products is longer), and it should be confirmed that the product is within the validity period.
3: It must be replaced regularly, usually for two years or every 40,000 km, and the taxi should be replaced. When replacing, the old liquid should be drained, and the cooling system should be cleaned before replacing with new liquid.
4: Avoid using water. Conventional inorganic antifreezes cannot be used on water, which can form precipitates that seriously affect the normal function of antifreeze. Organic antifreeze can be used on water, but water can't be too much.
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