It is normal to add antifreeze to the car once a month.

It is an abnormal phenomenon if antifreeze is added to the car once a month. If the antifreeze fluid is added so frequently, it indicates that the antifreeze fluid is lost, and the parts should be checked for leaks or damage. For example, check whether the vehicle water tank is leaking, check whether the engine cylinder head gasket is damaged, and check whether there is antifreeze in the oil.

Generally, the coolant is replenished once every 2 years or 40,000 kilometers, but this is only a reference value and should be determined according to the actual situation. When the coolant level is lower than the "MIN" mark line, the coolant needs to be added.For commercial vehicles (taxi), their vehicles are frequently used and drivemileageThe number is larger, so the cycle of adding coolant is shortened.

There are many kinds of coolant products on the market, which are distinguished by color, including blue, pink, orange, red, green, etc. The composition of different colors of coolant is different, for example, the composition of blue coolant is propylene glycol. The pink one is glycerol, and the green coolant is ethylene glycol.

In the emergency situation of coolant alarm, you can temporarily add water for cooling, but only distilled water can be added. This is only for emergency use, and it cannot be cooled by adding water for a long time, because the cooling liquid will be diluted after adding water, and the effect of the cooling liquid will be reduced. Also pay special attention not to add tap water, because calcium ions and magnesium ions will produce calcium carbonate and other scale after boiling, which will damage the engine and other parts in the long run.