Biodiesel and others alternative fuels has a potential to reduce emissions and to stop or slow down change of climate. So cutting emissions is one of the most important global initiative of present and future. High level of carbon dioxide and other exhaust gases in an atmosphere cause smog in cities, and woldwide has an influence on global warming. Exhaust gases are composed of nitrogen (N2), carbon dioxide (CO2), carbon oxide (CO), nitrogen oxide (NOX), hydrocarbons and particulate matters. Their origin is mainly from fossil fuels.