What do kinematic viscosity and viscosity index mean and what are the differences between them.
Kinematic viscosity is an indicator of the fluidity of an oil product. The higher its value, the higher its viscosity. Conversely, the lower its value, the lower its viscosity. This value will change with temperature, and the higher the temperature, the smaller the viscosity. On the contrary, the lower the temperature, the larger the value and the higher the viscosity.
What does the viscosity index mean. In fact, it represents the degree to which the oil changes with temperature. The higher the viscosity index, the less affected the viscosity of the oil is by temperature, and the less sensitive the viscosity is to temperature. The oil can always maintain a stable viscosity.
The viscosity index represents the viscosity temperature characteristics of lubricating oil. The higher the viscosity index, the better the viscosity temperature characteristics of the oil, and to a certain extent, the better the surface oil quality. It is an important control index in the production process of lubricating oil manufacturers.