Date of Award


Publication Type

Master Thesis

Degree Name



Civil and Environmental Engineering

First Advisor

Asfour, A. A.


Engineering, Chemical.




The objective of this work is to study the effect of polymeric additives upon the viscosity of two different base stocks over the temperature range -25°C to 10°C. The two base stocks being, (i) Imperial oil's MXT-5 base stock, and (ii) Chevron oil's Group III base stock. Four different viscosity-index improvers at five concentrations were employed. The viscosity-index improvers' behavior was studied in presence of pour-point depressants. The viscosity-index improvers being: hydrogenated diene copolymer (HDP) [C95-209], dispersant olefin copolymer (DOCP) [C96-309], olefin copolymer (OCP) [C98-129], polymethylacrylate (PMA) [C93-009]. The pour-point depressants are: acryloid 154-70 and paraflow 387. Kinematic viscosities and densities of all the base stocks and dilute polymer oil solutions were measured at -25, -20, -15, -10, -5, 0.0, and 10°C. Relative and specific viscosity values for the lubricant/polymer systems were calculated and are reported at the temperature levels employed in this study.Dept. of Civil and Environmental Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2003 .K375. Source: Masters Abstracts International, Volume: 42-03, page: 0989. Adviser: A. A. Asfour. Thesis (M.A.Sc.)--University of Windsor (Canada), 2003.