bio fuel discussion by chemist
 

http://www.youtube.com/watch?v=E5cGxlzk8rk

A chemist explains some basics about the bio-fuel source. It is more than for cars.
Some know I am psychotically against the concept of "EGR valve" and exhaust gas recirculation. This chemist hits the peaceful nail right on the head.
Leaving a one time fuel burn for CO2 more than NOX is nature by god.. and it does recycle, back to useful, by nature...to go through the whole singular burn process again.

:thumbup:

without a properly functioning egr valve your car has to retard the ignition to prevent octane knock. When working correctly, it also reduces emmisions.