In recent trends due to the increase in rate of petrol and diesel prices biodiesel has been used as an alternate fuel in many of the fast developing countries. However in our country also many research work has been done using different oils. In this paper instead of using a single oil, two different oils was mixed with diesel in different blends and the emissions were calculated and the results were plotted. The two different oils used was the Cashew nutshell liquid (CNSL) and the Rice bran oil. Cashew oil is found to be a by-product which is available from the Cashew industry and after the transesterification process the cardanol obtained was used without any modifications. Rice bran oil is mostly found in the places where rice is grown in a huge quantity and more number of research works has not been done in this oil. By the transesterification process the rice bran oil was prepared and mixed with the CNSL in the different proportions, which was also mixed with diesel in some amounts and the different characteristics were evaluated and plotted.