You might try your question over on this forum:

http://biodiesel.infopop.cc/eve/ubb.x?a=cfrm&s=447609751&f=898605551

The SVO guys there really know there stuff, and there is a little cross traffic between here and there. But they are SVO specialists, so you may get better info than you would here.

peace,
sam

__________________
"That f***in' biodiesel is makin' me hungry."

1982 300TD Astral Silver w/ 250k (BIO BNZ)
2001 Aprilia SR50 Corsa Red w/ 5.5k (>100 MPG)