ABSTRACT
It is essential for a lubricating oil blender to be able to quantify the contribution of each component entering in the formulation to the viscosity of the finished product.
In this context several studies have been devoted to the modelization of the thickening power of different types of polymers at both high (100° C and 40° C) and low (− 15° C) temperature in base oils of various origin and viscosity.
To complement these earlier investigations, it is necessary to quantify the effect of the additive package on the viscosity of the formulation. For this purpose, the effect of several Dl packages of different performance levels has been investigated in order to derive appropriate mathematical models representing their contribution of the oil viscosity.
