为什么要更换coolant 液

[case]

为什么要按时的更换coolant 液（2年或5年），不更换会有什么后果。另外coolant 液的更换跟什么有关。是里程还是年限。先谢谢各位大侠

 

[月下独酌]

两个都有关，whichever comes first

因为时间久了coolant里的防锈液可以失效
各种chemical都会breakdown的

 

[DayInDayOUt]

The freezing point for good coolant should be at -40 Celsius.
If the coolant is old and the freezing point is high, then it could pop the radiator during extremly cold weather.
You can aks a garage or your dealer to take a test.
Or you can simply flush it by following your car's manual.

 

[月下独酌]

or u can buy a simple tester
cost about 5$