Abstract
Lubricating oils encompass a wide range of composition and structure and exhibit different rheological behaviors. A strong positive reception of lube oil rheology should be helpful in quality control and product development of oils. This paper is projected to explain rheology of lubricating oils used for motor bike engines. The rheological study was performed using a controlled stress rheometer using Peltier Plate Assembly. Aim of this work is to access the effect on viscosity of lube oil due to change in angular velocity at a fixed temperature as steady state measurement. and to study temperature effects on viscosity of lube oil at fixed angular velocity as temperature ramp testing mode was studied. Results indicate that at low shear rate a dependent non-newtonian type of flow behavior is seen in all the test samples and viscosity reduces exponentially with the increase in liquid temperature. Key words: Lube Oil, Non-Newtonian Behavior, Rheology, Viscosity, Viscosity- Temperature