冬季天气寒冷,为了减少对发动机天天放冷却水带来的麻烦和避免因疏忽放冷却水而冻坏机体的情况,可在发动机的冷却系统内加注防冻液。目前,常用的防冻液主要有乙二醇、乙醇、甘油、甘油—乙醇等。由于这些防冻液的成份及配制比例不同,其凝点也有所不同。因此,选用时应根据当地的气温、作业区域环境等因素选用适宜的防冻液,切不可盲目乱用。一般来说,所选用的防冻液的凝点(凝固温度)应 Winter cold weather, in order to reduce the engine every day to put the trouble of cooling water and to avoid inadvertently put the cooling water and the body is frozen, can be added to the engine cooling system antifreeze. At present, commonly used antifreeze mainly ethylene glycol, ethanol, glycerol, glycerol - ethanol and so on. As these antifreeze ingredients and the preparation of different proportions, the freezing point is also different. Therefore, the selection should be based on local temperature, operating environment and other factors appropriate choice of antifreeze, must not blindly use. In general, the freezing point of the selected antifreeze (freezing temperature) should be