The world is experiencing the beginning of scarce resources such as coal and oil we use as energy sources. Due to this fact, many young students to scientists have devised various methods of making your own biofuel. These biofuels are biodiesel, bioethers, biogas and syngas. Biodiesel is one of the most common biofuel production five to six million tons worldwide. Biodiesel, fatty acid esters of alkyl is done by a chemical reaction of an alcohol with animal fat or vegetable oil. Being that biodiesel has its share of operational problems, biodiesel fuel additives are incorporated to reduce problems, including the taking of such fuel is more stable. The stability of biodiesel, especially B100, is essential to avoid deterioration of engine parts. Fuel additives are important to reduce oxidation and acid formation in engines. B100 can be destructive to an engine due to some factors that were used in their production. One factor that is capable of producing destructive product of biodiesel is the type of manufacturing process that was undertaken in order to come up with biodiesel. Another factor is the type of oil used in biodiesel production. One of the most damaging oil for an engine is because it is animal fat rubber polymers and other byproducts that can cause deposits and plugs in the engine. Fuel additives are included in the production of biodiesel to counter all these problems. The biodiesel fuel additives work to improve the quality of B100 biodiesel to make it more effective as a fuel for diesel vehicles.