Biodiesel fuel derived from fats and oils offers several advantages compared to petro-diesel fuel. These advantages are, it provide lower hydrocarbon and carbon monoxide emissions, higher cetane numbers, less smoke and particulates, provide engine lubricity to low sulfur diesel fuels and are biodegradable and nontoxic. In contrast, these fuels can present technical challenges such as: incomplete combustion, elevated NOx emissions, cloud points and cold filter plugging temperatures, high pour points, and low volatility