Reliance of the fossil fuels throughout the world in industrial sector and transportation make these resources become highly in demand nowadays. As a result, the price of these fossil fuels becomes higher due to their limited condition. Diesel and coal may appear to be very practical fossil fuels however they are ecological threatening. The emission discharge from the fossil fuels is the purpose for unnatural weather change and ozone pulverization.
Therefore, government all over the world are forcing the utilization of biodiesel which can reduce the emission that been discharge in the air. Biodiesel which are experimental changed from vegetable oils are primary substitution for original diesel fuels. However, experimental testing by using fully vegetables oil in diesel engines was conduct and the result appear to be failed because of it higher viscosity. Thus, to produce an effective biodiesel, the combination of vegetables oils and diesel oil must follow the ratios that have been made and the process of combustion and fuel injection must completely understand.