This is not a Molakule, Everybody else is going to learn from this question, but a Paulri, I am going to learn from this question. Here goes:
Yesterday I wanted to compare the viscosities of certain oils—not at operating temps, but at startup temps (for me), which would be freezing to 60 F. I found this online viscosity calculator http://jiskoot.com/services/calculations/viscosity-temp, and by plugging in the viscosities of a given oil at 40C and 100C, they could tell me what the viscosity would be at 0C.
My question is—are these numbers they were cranking out, reasonably certain to be the actual viscosities of the oils at 0C? Or are they simply an extrapolation, as if to say, we have no idea what the oil viscosity would be at 0C, but we just drew a line going through the 100C and 40C viscosities, and this is where the trajectory led to?
Yesterday I wanted to compare the viscosities of certain oils—not at operating temps, but at startup temps (for me), which would be freezing to 60 F. I found this online viscosity calculator http://jiskoot.com/services/calculations/viscosity-temp, and by plugging in the viscosities of a given oil at 40C and 100C, they could tell me what the viscosity would be at 0C.
My question is—are these numbers they were cranking out, reasonably certain to be the actual viscosities of the oils at 0C? Or are they simply an extrapolation, as if to say, we have no idea what the oil viscosity would be at 0C, but we just drew a line going through the 100C and 40C viscosities, and this is where the trajectory led to?