Quote Originally Posted by badflash
I found a site that sell phosphoric acid:
http://www.dudadiesel.com/biodiesel_chemicals.php

As it turns out it is used in the production of biodiesel. This place seems to have very reasonable prices. I'll also be buying pumps, valves and heat exchangers here for my WVO diesel experiment.
wow, just got up to speed on duda today myself, talk about being on the same page.