Biodiesel is the fuel that is obtained from esterification of vegetable or animal fats. They combination of the elements in biofuel can cause combustion activation like that of fossil fuels. The Methyl and the Ethyl esters are used to create viable alternative fuels. The alternative fuels are blended in certain ratios with the regular diesel or petrol. It works in the same principle in which fossil fuels work in internal combustion engine (Xue, Grift & Hansen, 2011, pp. 1098-1116). An important benefit of developing biofuel the abundant availability of raw materials makes it easier to develop biofuels. The proponents of the biodiesel in engines say that it can be used as such in the engines. This is true in cases where biodiesel percentages are low. It is a different story when the biofuel percentages are high. The compatibility of the engine with the biofuel depends on the make and model of the automotive vehicle. The current generation models are more adapting of the biofuels in their engines(Jääskeläinen, 2010). The productive capacity of the biodiesel depends on the components in the biodiesel. Currently the most common used ratio is 20 percent biodiesel with 80% petroleum.
A study was undertaken to evaluate the performance of B20 Biodiesel fuel vs. petroleum fuel in automotive vehicles. Each fuel kind was used for a day. There were four types of vehicles the sample size was 12 trucks they were the solo rear axle with Tier 1 engines, single rear axle with Tier 2 engines, tandems with Tier 1 engines and tandems with Tier 2 engines. It was found from this study that the Nitrogen oxide residues, Carbon oxide resides, Hydrocarbon residues were significantly reduced in biodiesel engines. The power of the engines was however reduced when biodiesel was mixed (Frey & Kim, 2005). The study did note there are limitations to be addressed in this biodiesel engines. However their availability and its impact on the atmosphere makes it an excellent alternative fuel choice.