Biodiesel fuel from seeds

Vegetable oils from canola seeds, corn seeds, sunflower seeds, flax seeds etc. can be treated to create a clean-burning fuel known as biodiesel. The most direct way to extract the oil from the seeds is to use mechanical or mechanical/solvent extraction. Extensive road tests of biodiesel fuel in trucks have proved that it is a suitable fuel, especially if petroleum becomes excessively costly or unavailable.