The Higher The Viscosity Of Lubricating Oil, The Better?
The higher the viscosity of lubricating oil, the better?Viscosity is an important property of lubricating oil. Only the proper viscosity of lubricating oil can give full play to the best lubricating effect.
Viscosity refers to the flow capacity of lubricating oil. The smaller the viscosity is, the greater the fluidity of lubricating oil is. The viscosity of the same lubricating oil will change under different temperatures and pressures. High temperature reduces viscosity, high pressure increases viscosity.
So, is the viscosity of lubricating oil high or low?
The quality of lubricating oil is not determined by the viscosity. Different regions and seasons should choose different viscosity lubricating oil.
The viscosity of lubricating oil should be selected according to the working conditions, not that the higher the viscosity, the better the oil is, the different application of different viscosity is not the same, and has nothing to do with the quality. The general principle is that the higher the temperature, the higher the viscosity of the oil, the faster the speed, the lower the viscosity of the oil, the heavier the load and the higher the viscosity of the oil. Viscosity index is used to describe viscosity temperature characteristics of lubricating oil. The higher viscosity index is, the better
Now a popular saying, from the development trend of lubricating oil, low viscosity lubricating oil is the future trend.
The global OEM brands have more stringent requirements on the evaporation loss and saps of lubricating oil, while the fuel economy of low viscosity lubricating oil is very obvious, which makes the major OEMs gradually turn to low viscosity lubricating oil. The products of SAE 0w20, SAE 0w16 and SAE 0w8 with ultra-low viscosity have been launched in the Japanese market. The initial oil of Chinese OEM is also turning to SAE xw20.
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