tons of people are running bio..i just started my processor up and been running b50
I know i'm not supposed to advertise for another group but Diesel Stop has a whole section with people who run PSD's on Bio.
one more good source of info is
http://biodiesel.infopop.cc/6/ubb.x?a=cfrm&s=447609751
I love the stuff......and for about a $1 a gallon you can't beat it