In addition to antifreeze, antifreeze also has the following advantages:

Corrosion protection: The engine and its cooling system are made of metals, including copper, iron, aluminum, steel and solder. These metals will corrode and rust when exposed to water at high temperatures for a long time. Antifreeze not only does not cause corrosion to the engine cooling system, but also has anti-corrosion and rust removal function.

General purpose: automobile, train diesel locomotive, tractor, ship, engine, water tank and all kinds of mechanical equipment, diesel engine, gasoline engine and other cooling system used as coolant. With anti - freezing, anti - boiling, anti - corrosion, anti - scale and other functions. The boiling point of water is 100℃. The boiling point of high-quality antifreeze coolant is usually 110℃ above zero, so that when used in summer, antifreeze coolant is more difficult to boil than water. Water as coolant makes drivers headache is the problem of scale, scale attached to the tank, water jacket metal surface, so that the heat dissipation effect is getting worse and worse, and it is difficult to remove. High quality antifreeze made of distilled water, and add anti-scale additives, not only does not produce scale but also has the function of descaling. Of course, if your tank scale is very thick, or thoroughly clean with tank cleaning agent before adding antifreeze. Like water, it has the advantages of large specific heat, high latent heat of evaporation and convenient replenishment. When the ambient temperature is below zero, the water in the cooling system will turn into ice, and the components of the cooling system will be at risk of expansion and cracking. At this time, the selection of antifreeze can ensure that the engine works normally at low temperature.

With the improvement of engine structure and the progress of material technology, compared with the old engine, a remarkable feature of modern automobile engine is the high operating temperature of modern engine. The normal operating temperature limit is generally more than 100℃. Taking domestic cars as an example, the normal engine operating temperature is: Shanghai Santana 90℃ ~ 105℃, FAW Jetta 85℃ ~ 115℃, Fukang 90℃ ~ 118℃. If all water is injected, when the engine temperature reaches 100℃, the water will boil. In addition, the water is corrosive, which will produce scale and affect the cooling effect. Therefore, it is necessary to use a special cooling medium - antifreeze.