Biodiesel indicates an animal fat-based or vegetable oil diesel fuel comprising of long-chain alkyl (methyl, ethyl, or propyl) esters. Biodiesel is customarily made by chemically reacting lipids (e.g., soybean oil, vegetable oil, animal fat (tallow)) with an alcohol generating fatty acid esters. Biodiesel is suggested to be utilized in standard diesel engines and is thus well-defined from the vegetable and waste oils used to operate fuel converted diesel engines. Biodiesel can be used singly, or blended with petrodiesel in any proportions. Biodiesel blends can also be utilized as heating oil.