WebThe Viscosity Index is a measure for how much the oil viscosity changes as a function of temperature. High viscosity index oils help productivity Mobil™īlending Tool - Viscosity Index - Evonik Oil Additives To learn more about viscosity determination, it is recommended to lead to premature wear and costly damage of machinery. Selecting an oil without considering its VI for a certain application can e.g. WebViscosity index is the most important parameter indicating an oil’s temperature-related flow properties. Understanding the viscosity index of a lubricant - Q8Oils The scale was … See more The viscosity index can be calculated using the following formula: where U is the oil's kinematic viscosity at 40 ☌ (104 ☏), Y is … See more roth florist philadelphia pa The temperatures chosen arbitrarily for reference are 100 and 210 ☏ (38 and 99 ☌). The higher the VI, … See more Many lubricant applications require the lubricant to perform across a wide range of conditions, for example, automotive lubricants are required to reduce friction between engine components when the engine is started … See more The VI scale was set up by the Society of Automotive Engineers (SAE). The lower the VI, the more the viscosity is affected by changes in temperature. It is mostly used to characterize the viscosity-temperature behavior of lubricating oils. The viscosity index (VI) is an arbitrary, unit-less measure of a fluid's change in viscosity relative to temperature change.
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