![]() ![]() Viscosity cSt mm²s 40C.Ī higher VI is important when your machine will experience a big change in operating temperatures. This information and all further technical advice is based. Viscosity changes with temperature and Viscosity Index VI tells you how much. The calculator on this site is for informative purposes only. You are trying to make 20W-50 oil I guess. Calculator for viscosity index VI according to ASTM D2270 and ISO 2909. ![]() Lubricant oils Viscosity Calculator at 100C.Īge Under 20 years old 20 years old level 30 years old level 40 years old level 50 years old level 60 years old level or. ASTM D341 Viscosity-temperature extrapolation. A high VI-value indicates smaller viscosity changes with temperature.Ĭalculate viscosity for a given pressure. Oil needs to flow when cold but not get too thin and runny when its warm. ASTM D2270 Viscosity index VI from 40C and 100C. Calculate the viscosity using the viscosity index.Įvonik Oil Additives Tradeshow KV100 C cSt mm²s KV40 C cSt mm²s. ![]() The viscosity in centiStokes at 40C and the viscosity index of the oil are used as input.
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