Abstract
Abstract
Three different of Iraqi motor oils have been chosen ,Baghdad, Al Rasheed and Babylon. Using viscometer Redwood No.2 to check the best performance of these motor oils has done many experimental works. In order to get the value of thermal viscosity index of new and used motor oils, plotting the relationship between Temp and Time for each Type of oils. The results shown that the lower value of T.V.I mean that oil was the best. By the application of the World definition for V.I oils and compare all the types of our chosen oils with the two standard types of oils at 100F and 210F then plot the relation between temp and viscosity also the relation between log-temp and log-viscosity ,we can show that when the slope of the curve decrease as the temp increase which mean that the of viscosity decreases with the increases of temp. In order to get more information about the performance of these oils, the I.R infrared instrument has been used to get the relation ship between the transmittance and wave number, by analyzing and normalizing the data obtained from the above relation-ship .it is concluded that no noticeable change occurred on furfural extraction there is in fact a considerable increase in the CH2/CH3 finally, we can say Baghdad oil is the best one then Al-Rasheed oil and Babylon oil respectively.
Key words : Oils , Viscosity , Performance
