Abstract
The variation in the rheological properties of engine oil with usage was examined in this study. The parameters considered include: the kinematics viscosity, viscosity index and specific gravity. These properties of lubricating oil tend to degrade in quality with usage. This study gives a relationship between the stated properties and distance covered for a commonly used car in Nigeria (fairly used Honda Accord of 1988 model). The relationship so obtained is represented in the form of a linearized model to enhance prediction.
Keywords: Rheology, viscosity, friction and lubrication.
[Global Jnl Engineering Res. Vol.2(1&2) 2003: 95-100]