What is the role of lubricating oil in the use of mixing plants ? Lubricating oil is an auxiliary material frequently used in the use of concrete mixing plants . Today we are going to talk about the role of lubricating oil. [caption id="attachment_1951" align="alignnone" width="688"] concrete mixing plants[/caption] The requirement of the mixing plants to its lubricating oil is to have a certain purchase viscosity and viscosity temperature characteristics, low condensation point, good oxidation stability and good stability without mechanical impurities and moisture, incompatible with corrosion and wear material. Commonly used gasoline engine lubricants are numbered by kinematic viscosity of 100C, with 6, 10, 15, 8 thickening, 8 low coagulation, 8 synthetic thickening and so on. The higher the general grade, the greater the viscosity.