大家都知道水泥自動攪拌車發動機的保養是離不開機油的，對于常年跑在建筑工地的攪拌車來說，發動機的保養和維護更為重要。很多人對機油的認知存在誤區，接下來就來具體看一下機油的在使用中有哪些誤區呢？

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、機油的粘性越大越好

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

一般來說，從潤滑的角度來說粘性過大，水泥自動攪拌車啟動時機油就上的慢，而車輛啟動和機油沒有完全熱起來的時候對車輛的磨損是大的，機油的作用之一是給發動機散熱冷卻。我們知道發動機冷卻液主要負責發動機上部燃燒室周圍零部件的冷卻。

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.

除此之外的各個運動部件都要依靠機油來散熱。如果粘性過大，單位時間內機油的流量小，則零部件的冷卻效果就會差很多。相應的，零部件冷卻不好，其使用壽命就會大打折扣。因此，機油選擇合適的粘性才是對發動機大的保護。

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、礦物油比合成機油更粘稠

2、 Mineral oil is more viscous than synthetic oil

很多的人憑外觀感覺會認為相同粘度等級合成機油粘度太稀機油壓力會不好，實際上合成機油特性就在于此。因此發動機對于機油的粘度要求是低溫啟動和低溫運轉必須保證粘度足夠低，才能減少磨損。水泥自動攪拌車發動機高溫運轉必須保證合適的粘度，才能保證足夠的潤滑效果。

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.

機油有個評價指標：粘度指數，粘度越高指數越高，說明機油的穩定性越好，全合成機油粘度指數可以達到160以上，而普通礦物機油粘度指數一般不會超過100.所以合成機油的優勢只有在發動機高溫和環境低溫情況下才能展現出來。

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.

自動上料攪拌車發動機選擇什么粘度等級的機油，是由發動機溫度和發動機個零部件配合間隙以及零部件剪切強度決定的。以上就是關于水泥自動攪拌車的機油使用誤區，希望對您能有所幫助。更多關于水泥自動攪拌車的知識請關注本網站http://www.top2010.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.top2010.cn 。