Mineral oil viscosity index7/25/2023 The graphic curve will be updated as well. All other values will be re-calculated automatically. Just put your values (either imperial or metrical) in the appropriate fields below and press ENTER. We can say that the it is the dimensionless number that shows how the temperature change can affect viscosity of an oil (engine oil and automatic gear oils, and power-steering fluids). The use of any of the calculators’ results is at the user’s sole risk. The viscosity index (VI) is an arbitrary, unitless measure of a fluid’s viscosity change relative to a temperature change. Hydrocracked Base oil - Wikipedia will have a VI greater than 120, while synthetics may have a higher VI. The VI of a highly refined mineral oil (hydrotreated) can be up to 120. The calculator below is for informative purposes only. A traditional mineral oil has a viscosity index between 95 to 100. You can calculate pre-filled values of oil classified by ISO 3448 with grades VG22, VG32, VG46 or VG68 (at viscosity Index = 100) or enter specific values for any other oils. ![]() These data is enough to determine kinematic viscosity at any other values of temperature and as well Viscosity Index. Typical lubricating oils have viscosities in the range 2400 cP the viscosity of water at room temperature is about 1 cP. the Viscosity Index (VI) by the formulas specified in ASTM D2270 (`Standard Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100☌ 1`) or in ISO 2909 (`Standard Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100☌ 1`) or in ГОСТ 25371-2018 (`Нефтепродукты.‘cSt’ stands for CentiStokes, an accurate dynamic measure of viscosity ( ISO 3104:1994 & ASTM D445-04 ). the kinematic viscosity values, depends from temperature, calculated by the formulas specified in ASTM D341 – (‘Standard Practice for Viscosity-Temperature Charts for Liquid Petroleum Products’) Viscosity (ISO) Modern fluid viscosity ratings are on an ISO VG (visocosity grade) using test standards set down by ASTM D-2422-97 (2002) & ISO 3448:1992 system of: cSt40C / cSt100C / VI.The interpolation calculator provided below is used to determine:
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