Inserting Eq. 2 into Eq. 1 above, will permit solving for the constants A and B for a fluid in which some of the experimental kinematic viscosity data fall below 2.0 mm2/s (cSt). This form can also be used to calculate the temperature associated with a desired kinematic viscosity.
Conversely, the kinematic viscosity associated with a stated temperature can be found from the equation determined as in Eq. 2 by solving for Z in the substituted Eq 1, and then subsequently deriving the kinematic viscosity from the value of Z using Eq. 3.
Crude Oil Form: Loglog(𝑣 + 0.7) = 𝐴 − 𝐵log𝑇