冬季寒冷。为防止冻裂机体。要在发动机冷却系统中加防冻液。常用的防冻液有乙二醇、乙醇、甘油、甘油-乙醇等,由于配制时比例成分不同,其凝点有所不同。因此。选用时应根据当地冬季气温、作业区域来确定防冻液的种类。一般来说.所选防冻液的结冰点应低于最低气温10～15℃,以免防冻液不起作用。使用防冻液要注意: 1.加防冻液前.应清除冷却系的水垢,并放净残水,以免冲淡防冻液,改变凝点。 2.加防冻液只能加到冷却系容量的93～95%。不能加得过满.防冻液具有吸湿性,冷却系应密封良好. 3.乙二醇、乙醇防冻液有毒,不得接触皮肤,不用嘴吸,以防中毒。 4、乙二醇是有机溶剂,加注时 Cold in winter. To prevent the body from cracking. Antifreeze should be added to the engine cooling system. Antifreeze commonly used glycol, ethanol, glycerol, glycerol - ethanol, etc., due to the proportion of different ingredients, the freezing point is different. therefore. Selection should be based on the local winter temperature, work area to determine the type of antifreeze. In general, the freezing point of the selected antifreeze should be lower than the minimum temperature 10 ~ 15 ℃, in order to avoid antifreeze does not work. Use antifreeze should pay attention to: 1. Add antifreeze before cooling system should remove the scale, and put a net residual water, so as not to dilute the antifreeze, change the freezing point. 2. Add antifreeze can only be added to the cooling capacity of 93 to 95%. Antifreeze should be hygroscopic and the cooling system should be well sealed. 3. Ethylene glycol and ethanol antifreeze are toxic and should not come in contact with the skin or mouth, so as to prevent poisoning. 4, ethylene glycol is an organic solvent, when filling