According to the requirements of the car maintenance manual, antifreeze should be used at all times, and water should not be used to replace antifreeze, so antifreeze should also be replaced in time in summer. However, in actual use, if it is summer and the antifreeze has reached the replacement cycle, it can not be replaced temporarily. It can be postponed later. It will not be a problem to wait for winter to replace it.
In addition to antifreeze, the freezing liquid has other functions, such as rust prevention, corrosion prevention, lubrication, high boiling point and less scale, which are not available in water. After adding water, the rust and corrosion of the water channel will become faster, and the scale will also become faster. In addition, the boiling point of external water is low, and it is easy to boil in summer. Therefore, antifreeze should also be used in summer. Of course, if the antifreeze leakage causes high water temperature on the highway or in remote areas, and there is no antifreeze on the vehicle, water can be added for emergency. After adding water, you can at least continue to drive, otherwise you have to wait for rescue, and when you can find a repair shop, you can repair it, and replace it with antifreeze. The replacement cycle of antifreeze is quite long. Some cars can reach 5 years. Most cars can replace antifreeze within 3-5 years. The mileage is usually 60000 km. Of course, it's better to check its antifreeze ability before replacing it. If there is a big decline, replace it. If there is a small decline, you can not replace it even when it reaches the end of its service life.