A McDonald’s franchise owner in Glendale, Arizona is using old oil from deep fryers to create biofuel.
How? After the oil is used in a deep fryer, it is removed and stored in containers where it separates into a liquid and solid. The former becomes biofuel after it is processed through several filters. After the filtering, it can be poured right into a vehicle’s tank. Note the oil has to remain hot so that it won’t solidify.