Add a flat plate heat exchanger.

To learn about biodiesel try:

www.biodieselcommunity.org
www.biodiesel.infopop.cc

and for general "stuff" I buy what I am interested in and stock it in my store:
www.fryerpower.com

-Jim

__________________
1995 S350D, Green with black leather interior.
Bought January 2008 w/ 233,xxx miles.
I did 22,000 miles during the first year of ownership.