Early in the history of the lubricants industry, the viscosity index (VI) was an important measure of quality, providing an indication of the potential of an oil for application over a wide temperature range. Pennsylvania grade oils (∼ 100 VI) were the standard...
CITATION STYLE
Stambaugh, R. L. (1992). Viscosity index improvers and thickeners. In Chemistry and Technology of Lubricants (pp. 124–159). Springer US. https://doi.org/10.1007/978-1-4615-3272-9_5
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