how. the viscosity index of lubricating oil can be improved
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A Simple Explanation of Viscosity Index Improvers
Jeremy Wright, Noria Corporation
Viscosity index, noun
An arbitrary scale for lubricating oils that indicates the extent of variation in viscosity with variation of temperature.
Improver, noun
A person or thing that improves.
Viscosity index (VI) is a commonly used method of measuring a fluid's change of viscosity in relation to temperature. The higher the VI, the smaller the relative change in viscosity with temperature. VI improvers (also known as viscosity modifiers) are additives that increase the viscosity of the fluid throughout its useful temperature range.
This article is meant to provide you with a better understanding of viscosity index improvers, what they are, what they do, and why they are important.