防冻液：防冻液又可以叫做防冻冷却液，不仅是用在冬天要全年用！
Antifreeze: antifreeze can also be called antifreeze coolant, not only used in winter, to use all year round!
主要是为发动机冷却带走多余的热量，同时防止冬季管路内的冷却水结冰胀裂散热器，以及冻坏发动机气缸体。另外，防冻液还能为冷却部件起到防腐，防垢保护，是发动机不可或缺的一种液体。
It is mainly to take away excess heat for engine cooling, and prevent the cooling water in the pipeline from freezing, cracking the radiator and freezing the engine cylinder block in winter. In addition, antifreeze can also play anti-corrosion and anti scaling protection for cooling parts, which is an indispensable liquid for engine.
防冻液定期检测即可，只要看液位、颜色，防冻液鲜艳的荧光色其实就是为了判断稀释情况的，当颜色大幅度下降、变浅时，就需要进行更换了，因为此时的防冻液已经稀释、乙二醇浓度降低，直接导致的结果就是沸点下降、冰点升高，这种状态的防冻液冬天容易冻、夏天高负荷运转时又容易开过，建议彻底的进行更换，跟换时选择颜色、成分一致的；而如果只是液位降低、颜色无明显降低，只需要补充一些同颜色、同成分的新冷却液即可！不过在还未更换防冻冷却液期限内，要是发现防冻冷却液少于最小的刻度值(防冻冷却液正常的容量应在MIN和MAX之间)，就要及时增加，不然会影响发动机的冷却效能。
Antifreeze can be detected regularly, as long as you look at the liquid level and color, the bright fluorescent color of antifreeze is actually to judge the dilution situation. When the color drops greatly and becomes lighter, it needs to be replaced, because at this time, the antifreeze has been diluted and the concentration of ethylene glycol is reduced, which directly leads to the decrease of boiling point and rise of freezing point. Antifreeze in this state is easy to be replaced in winter It is easy to turn on when it is running under high load in freezing and summer days. It is recommended to replace it thoroughly, which is consistent with the color and composition when changing. If the liquid level is only reduced and the color is not significantly reduced, it is only necessary to add some new coolant with the same color and composition! However, if the antifreeze coolant is less than the minimum scale value (the normal capacity of antifreeze coolant should be between min and max), it should be increased in time, otherwise the cooling efficiency of the engine will be affected.