Professional paper
SHEAR STABILITY OF MOTOR OILS
Jaroslav Cerny
Ivana Vaclavickova
Abstract
Abstract
Paper summarizes influences on motor oil viscosity, such as shear stability of viscosity modifiers, fuel and/or soot content, and thermal oxidation degradation of oils. Significance of individual aspects was monitored for several motor oils of different viscosity grades during over-the-road service of vehicles powered by spark ignition as well as diesel engines. Trends of viscosity changes were noticed and evaluated.
Keywords
Hrčak ID:
6536
URI
Publication date:
31.10.2006.
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