![]() The change in viscosity enables conclusions to be drawn on mixture with other oils, impurities such as fuel or soot, VI improver shear or oil thickening due to factors such as oxidation. The higher the VI, the lower the temperature-related change in viscosity. ![]() The viscosity values at 40 ☌ and 100 ☌ are used to calculate the VI (viscosity index). The time the oil requires to travel a certain measuring distance is converted into kinematic viscosity at 40 ☌ and at 100 ☌ using the capillary constant. While from the test results of the tool that has been designed to wake up, the results of fluid viscosity are constant, for the speed and pressure are also. The ISL Houillon viscosimeter consists of a 40 ☌ and a 100 ☌ tempering bath, each containing 4 capillar viscosimeters. The viscosity determination is a description of the pouring behaviour of liquids. Viscosity 40 ☌, viscosity 100 ☌, VI (viscosity index) Mm²/s for viscosity, none for VI (viscosity index) ![]() ISL Houillon Viscometer, kinematic viscosity ![]()
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