Which kinds of pure plant oils are suitable for powering (converted) diesel engines?
There are more than 2000 kinds of oil fruits (seeds, nuts, etc.), most of them usable as fuel sources. Oil yields vary quite a bit and therefore of course the oil price. Viscosity is also a variable that makes certain oils more suitable than others. Rapeseed, sunflower seed and soy bean oil are the most affordable and widely available. It is important that the oil meets the so called DIN 51605 quality standard for cleanliness and viscosity (former Weihenstephan Standard).
