European Activity Concerning Engine Oil Viscosity Classification - Part IV - The Effects of Shear Rate and Temperature on the Viscosity of Multigrade Oils

Abstract
Three mathematical models have been used to correlate over a thousand high-shear-rate viscosity data generated by CEC Committee CL-23 on multigrade reference oils, using shear rates up to 16000 s\u-₁ at 25°C and up to 1300 000 s\u-₁ at 150°C. The work has established that all three models provide a