The heat dissipation effect of water is not as good as that of special antifreeze, its boiling point is lower than that of antifreeze, and it freezes below 0 degrees in winter.
There is an anti-freezing pot in the engine compartment with scales on it. If it is below the minimum scale, it needs to be added.
Antifreeze generally needs to be replaced after two or three years.
The full name of antifreeze should be antifreeze coolant, which means coolant with antifreeze function. Antifreeze can prevent the coolant from cracking the radiator and freezing the engine cylinder block or cover when parking in cold winter. Many people think that antifreeze is only used in winter, but it is actually used all year round.
What does antifreeze do?
1. Corrosion protection
The engine and its cooling system are made of metals, including copper, iron, aluminum, steel and solder. These metals will be corroded and rusted when exposed to water at high temperature for a long time. Antifreeze not only won't corrode the engine cooling system, but also has the functions of corrosion prevention and rust removal.
2. High boiling point
The boiling point of water is 100℃, while the boiling point of high-quality antifreeze coolant is usually above zero 1 10℃, so in summer, antifreeze coolant is more difficult to "boil" than water.
3. Scale prevention
When water is used as coolant, scale is the most troublesome problem. The scale adheres to the metal surface of water tank and water jacket, which makes the heat dissipation effect worse and worse, and it is also difficult to remove. High-quality antifreeze is made of distilled water and added with anti-scaling additives, which not only does not produce scale but also has the function of scale removal. Of course, if the scale of your water tank is thick, you'd better clean it thoroughly with water tank cleaner before adding antifreeze.