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一、不要使用牌号过高的润滑油机动车所用的润滑油是以油液的粘度来命名的，油液的牌号越高，其运动粘度越大。在正常情况下，润滑油的粘度小一点是比较有利的。只要润滑油具有良好的油性（即与零件的亲和力）和平滑的粘温特性，能在各种温度条件下形成有一定强度的油膜即可。?
First, do not use too high grade lubricants Motor oil is used to the viscosity of the oil to the name of the higher grades, the greater the kinematic viscosity. Under normal circumstances, the viscosity of lubricating oil is a little more favorable. As long as the oil has a good oily (that is, with the parts of the affinity) and smooth viscosity-temperature characteristics, in a variety of temperature conditions can be formed with a certain strength of the oil film can be. ?