近日,河北省迁安市城乡公交有限公司负责车辆管理工作的杨先生来电咨询,冬季过后,车辆的防冻液可不可以换成水的问题。他在电话中说:“我们单位有95辆公交车,每年冬季过后,我们就把防冻液回收,换上水,来年冬天的时候再继续使用。这样做节省了一些成本,但不知道对发动机有没有损伤。另外,我们再次使用防冻液时,会适量掺些水进去,这种做法正确吗? Recently, Qian’an City, Hebei Province Urban and Rural Transport Co., Ltd. is responsible for vehicle management, Mr. Yang to inquire, after the winter, the vehicle antifreeze can not be replaced by water. He said on the phone: ”Our unit has 95 buses, every year after the winter, we put the antifreeze recovery, replaced by water, the winter of the year to continue to use. This saves some costs, but do not know Is there any damage to the engine? In addition, when we use antifreeze again, do we mix some water into it? Is this correct?