由于工程机械冷却系统的容量较大，而市场购买的小桶防冻液价格贵，因而许多驾驶员到了寒冷的冬天仍采用早晨加水、收工回来放水的办法来防止冻坏机体。如果购买乙二醇自行配制防冻液，既可按本地气温配制相应冰点的防冻液，又能降低成本。（1）乙M醇为无色无味的粘稠液体，沸 Due to the large cooling system capacity of construction machinery and the high price of antifreeze keg bought by the market, many pilots use the morning to add water to the cold winter to stop the water from freezing to damage the body. If the purchase of ethylene glycol to prepare their own antifreeze, either according to the local temperature to prepare the corresponding freezing point of antifreeze, but also reduce costs. (1) B M alcohol is a colorless and odorless viscous liquid, boiling