Using these parameters and the measured viscosity of the oils at 40 C and 100 C, the viscosity index can be calculated. Fill in zero (0) in the weight percent column (Wt%) if Base oil #3 and-or Base oil #4 are not part of the mixing viscosities. To calculate the VI, the basic parameters L and H, which are related to high and low viscosity index oils, both at the same temperature of 40 C, must be determined. You can use this calculator to predict mixing viscosities of 2-4 base oils. Viscosity temperature is not required but must be the same for all base oils viscosities. Fill in zero 0 (or leave default “0”) in Wt % if not included in the blending calculations. Please note: Leave the default value of “1” in the viscosity field if blending less than two liquids. If you don’t want to include 3rd and 4th base oils, fill any value (>1) in the viscosity cell and zero (0) in the Wt%.Ĥ- Repeat the same for Base Oil #4 by filling in the viscosity and Wt% of the Base oil.ĥ- Click Calculate to predict the mixing viscosity of the blend. Viscosity Calculator #3ġ- Fill the viscosity of Base oil #1 and weight percent (Wt%) in the third (Wt%) column.Ģ- Fill in the viscosity of Base Oil #2 and weight percent (Wt%) in the next column.ģ- Fill in the weight percent (Wt%) and Base oil #3 viscosity in the 3rd row. Module #3: Mixing viscosities calculator to blend or mix more than two base fluids.
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