How is biodiesel viewed by the car manufacturers?
• Some UK manufacturers only maintain their engine warranties for use with a maximum 5% biodiesel blend as compared to standard fuels it is relatively untested. • Volkswagen and Scania now allow most of their diesel-engined vehicles to operate on 100% biodiesel. • Peugeot and Citroen have both announced that their PSA Hdi engine can now run on 30% biodiesel.