This is my favorite topic.
I don't believe bio diesel has much different chemical makeup from petro diesel, it that they are both hydrocarbon strands and they are both organic. Petroleum is really not much more than biodegraded plant material.
It's great there's an interest in this technology, because these types of fuels represent an alternative to foreign oil and the affect it has on our nation. I will scour my resources for information, Greywolf, as long as you continue posting what you find!
BDV