The water in the car tank freezes at MINUS several degrees in winter.

If there is pure water in the car water tank, the water in the water tank will freeze when the temperature is below zero in winter. If the water tank is antifreeze, the freezing points of different antifreeze are different.

There are two main points to measure the advantages and disadvantages of antifreeze:

The first is the antifreeze effect. The freezing point of water is 0℃, ordinary antifreeze can reach -40℃, while high-quality antifreeze should reach -60℃, which is an important index to calibrate the quality of antifreeze. The other is the boiling point of antifreeze. The boiling point of water is 100℃, and the antifreeze should at least reach 108℃. In other words, the lower the freezing point, the higher the boiling point, the greater the temperature difference, and the better the quality of antifreeze.

Extended data:

Precautions:

1. When it is found that the water tank is seriously frozen, it should be immediately unloaded and put indoors for warm baking and thawing.

2. If the water tank freezes slightly, immediately let the engine run at idle speed and cover it with a heat insulation cover.

When the water tank freezes, the water thermometer usually points to 100℃ because the water in the upper part of the water tank is boiling. When the water flow is smooth after the ice melts, the pointer of the water thermometer drops to the normal range, indicating that the water tank icing phenomenon disappears.

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