I believe everyone is familiar with antifreeze, which can be said to be a must-have item for cars, but some people think that antifreeze should be left alone in summer. Is that so? Do you still need "antifreeze" in hot summer? Some people think that antifreeze has little effect in summer, mainly in winter, and it is not too late to check again in winter! But this is not the case!
The full name of antifreeze is "antifreeze coolant", which means coolant with antifreeze function, which can take away excess heat for engine cooling, and prevent the cooling water in the pipeline from freezing in winter to crack the radiator and freeze the engine block, that is, to prevent boiling in summer and freezing in winter. In addition, it has excellent anti-fouling and anti-corrosion properties all year round, and is an indispensable liquid for engines. Therefore, antifreeze is also needed in summer, and it is necessary to pay attention to the state of antifreeze from time to time.
There are three main components of antifreeze: deionized water, antifreeze and corrosion inhibitor. At present, the antifreeze on the market basically uses ethylene glycol as antifreeze, and a small number uses propylene glycol. The types of antifreeze are different, mainly because the components of corrosion inhibitors are different, so the final life performance is also different, which can be roughly divided into "ordinary type" and "long-lasting type". There are three main formulations of corrosion inhibitors: inorganic salt type, organic acid type and compound type.
Inorganic salt antifreeze is generally replaced every 1~2 years.
Inorganic salt corrosion inhibitors are consumed quickly, and the service life is generally only 1 to 2 years, and corrosion inhibitors are almost always added from 5000km to 30000km.
Long-acting organic acid antifreeze has a long shelf life.
Compared with inorganic salt corrosion inhibitors, organic acid corrosion inhibitors are consumed much more slowly in the process of use. The service life of organic acid antifreeze is generally 3 to 5 years, 10 to150,000 kilometers, and no additives are needed.