Biodiesel is totally safe. It creates less pollution and is safe to living things. Beyond all that, biodiesel creates a byproduct that is useable - glycerin, which is used to manufacture soap. Biodiesel can also be usable in other things. The biggest use for biodiesel that consumers are aware of is as a fuel to make vehicles run. Biodiesel can be used as a alternative for diesel. And still biodiesel has many other uses. It can be used to run diesel engines, including boat and railroad. It can also be used to heat oil.