大家都知道水泥自动搅拌车发动机的保养是离不开机油的，对于常年跑在建筑工地的搅拌车来说，发动机的保养和维护更为重要。很多人对机油的认知存在误区，接下来就来具体看一下机油的在使用中有哪些误区呢？

Everyone knows that the maintenance of the engine of cement automatic mixer trucks cannot be separated from oil. For mixer trucks that run on construction sites all year round, the maintenance and repair of the engine is even more important. Many people have misconceptions about engine oil. Next, let's take a specific look at what misconceptions exist in the use of engine oil?

一、机油的粘性越大越好

1、 The greater the viscosity of the oil, the better

一般来说，从润滑的角度来说粘性过大，水泥自动搅拌车启动时机油就上的慢，而车辆启动和机油没有完全热起来的时候对车辆的磨损是大的，机油的作用之一是给发动机散热冷却。我们知道发动机冷却液主要负责发动机上部燃烧室周围零部件的冷却。

Generally speaking, from the perspective of lubrication, if the viscosity is too high, the oil in the cement automatic mixer truck will slowly fill up when starting, while when the vehicle starts and the oil is not fully heated, the wear on the vehicle is significant. One of the functions of the oil is to provide heat dissipation and cooling for the engine. We know that engine coolant is mainly responsible for cooling components around the upper combustion chamber of the engine.

除此之外的各个运动部件都要依靠机油来散热。如果粘性过大，单位时间内机油的流量小，则零部件的冷却效果就会差很多。相应的，零部件冷却不好，其使用寿命就会大打折扣。因此，机油选择合适的粘性才是对发动机大的保护。

In addition, all moving parts rely on oil to dissipate heat. If the viscosity is too large and the oil flow rate per unit time is small, the cooling effect of the components will be much worse. Accordingly, poor cooling of components will greatly reduce their service life. Therefore, selecting the appropriate viscosity of the oil is the greatest protection for the engine.

二、矿物油比合成机油更粘稠

2、 Mineral oil is more viscous than synthetic oil

很多的人凭外观感觉会认为相同粘度等级合成机油粘度太稀机油压力会不好，实际上合成机油特性就在于此。因此发动机对于机油的粘度要求是低温启动和低温运转必须保证粘度足够低，才能减少磨损。水泥自动搅拌车发动机高温运转必须保证合适的粘度，才能保证足够的润滑效果。

Many people believe that the viscosity of synthetic oils with the same viscosity grade is too thin, and the pressure of the oil is not good. In fact, this is the characteristic of synthetic oils. Therefore, the viscosity requirement for engine oil is to ensure that the viscosity is sufficiently low during low temperature startup and operation to reduce wear. The engine of an automatic cement mixer truck must have a suitable viscosity during high-temperature operation to ensure sufficient lubrication.

机油有个评价指标：粘度指数，粘度越高指数越高，说明机油的稳定性越好，全合成机油粘度指数可以达到160以上，而普通矿物机油粘度指数一般不会超过100.所以合成机油的优势只有在发动机高温和环境低温情况下才能展现出来。

There are two evaluation indicators for oil: viscosity index. The higher the viscosity, the higher the index, indicating the better the stability of the oil. The viscosity index of fully synthetic oil can reach 160 or more, while the viscosity index of ordinary mineral oil generally does not exceed 100. Therefore, the advantages of synthetic oil can only be demonstrated under high engine temperatures and low ambient temperatures.

自动上料搅拌车发动机选择什么粘度等级的机油，是由发动机温度和发动机个零部件配合间隙以及零部件剪切强度决定的。以上就是关于水泥自动搅拌车的机油使用误区，希望对您能有所帮助。更多关于水泥自动搅拌车的知识请关注本网站http://www.sdzkjf.cn。

The viscosity grade of oil selected for the engine of an automatic feeding mixer truck is determined by the engine temperature, the fitting clearance of individual engine components, and the shear strength of the components. The above is a misconception about the use of oil in cement automatic mixer trucks. I hope it can be helpful to you. For more information about cement automatic mixer trucks, please visit this website http://www.sdzkjf.cn 。