Can biodiesel be used as a pure fuel only, or can it be blended with petroleum diesel?
Biodiesel can be used as a pure fuel, or it can be blended with petroleum diesel in any percentage. B20 (a blend of 20% by volume biodiesel with 80% by volume petroleum diesel) has demonstrated significant economic and environmental benefits for fleet operations and other consumers. Biodiesel can be blended “at the pump,” and in some countries biodiesel is used 100% at the pump.