如何更换防冻液更彻底?

2025-03-15 21:30:50
推荐回答(2个)
回答1:

很多车友抱怨“原以为更换防冻液很简单,按照说明书操作就能搞定。但是在更换过程中却发现常规方法很难换出全部防冻液。” 多数车友知道防冻液的更换周期是两年,应在车辆行驶8万公里左右进行更换。但是具体到如何才能更换得更彻底,大部分车友就说不清了。 长城润滑油汽车养护专家指出,除了提供低温保护外,防冻液还可以防止发动机过热、防腐蚀、防锈蚀。非同一品牌同一标号的防冻液不能混用。所以,添加非原品牌的防冻液时,一定要保证完全置换。 在发动机完全静止时更换防冻液,由于冷却系统内的冷却液处于静止状态,节温器没有打开,所以系统内的水套、暖风水箱等处仍存留有旧防冻液,约为总量的1/3。由于更换不彻底,会造成系统重新运转后新旧液相混,影响防冻液的功效,同时易形成气堵造成水温升高,从而损伤发动机。 更换防冻液时需注意,打开上盖时,为防止烫伤应使用厚布包住。同时,更换过程中,应该让水泵运转,充分排空。接着用自来水管插入上水口进行冲洗,一定时候也需要点火,循环水流,冲刷干净,再次排空。最后把下水口拧紧,倒入新防冻液,加满后再点火循环,有时候要让转速高点,再加满,这样就基本可以了。 专家还建议更换防冻液最好到专业的维修养护站点进行。

回答2:

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