防冻液是保证发动机正常工作必不可少的工作介质。若冷却系统温度过高,则发动机缸盖、燃烧室、活塞以及排气门等均会过热,从而使材料失去强度,导致发动机故障并使发动机使用寿命缩短;不充分的冷却还会使得发动机机油过早老化,从而使机油润滑效率降低,这可能会造成发动机部件的不正常磨损等;若冷却系统温度过低,使得燃烧效果变差,发动机热效率降低,这 Antifreeze is to ensure the normal work of the engine essential working medium. If the cooling system temperature is too high, the engine cylinder head, combustion chamber, piston and exhaust valve, etc. will overheat, so that the material loses its strength, leading to engine failure and shorten the life of the engine; inadequate cooling will make the engine oil Premature aging, so as to reduce the efficiency of lubricating oil, which may cause abnormal wear and tear of engine components, etc .; if the cooling system temperature is too low, making the combustion worsened, the engine thermal efficiency decreased, which