Here is some good info off there page:
FAQ
Q: What do I have to do to convert my engine to use biodiesel?
A: Nothing. Simply fill your diesel fuel tank with biodiesel and drive away.
Q: I can’t find you on Mapquest. How do I get there?
A: Click on Directions at the bottom of our homepage.
Q: How much does biodiesel cost?
A:
3.50 a gallon.
Q: Why is its so expensive?
A:
3.50 is cheap. Petroleum fuel is heavily subsidized in the United States. If it paid its fair share for healthcare and security it would be two to three times more expensive. People on petroleum diesel pay its true price on April 15th rather than at the pump.
Q: Is Biodiesel classified as a hazardous material?
A: No.
Q: Does biodiesel burn cleaner?
A: Yes. It contains no sulfur, and is carbon neutral. Burning it does create Nox.
Q: Will I get the same fuel economy running biodiesel?
A: Yes.
Q: Do I get the same power running biodiesel?
A: Yes. Biodiesel contains 5% fewer btus per gallon than petroleum diesel, which is unnoticeable in on-road use.
Q: Can I sell my homemade fuel?
A:
No. Not unless it passes ASTM 6751 testing and you belong to the National Biodiesel Board.
Q: Why do I have to belong to the National Biodiesel Board?
A:
They have a monopoly on the "Human Health Effects Data" that is required by the EPA. Access to the data, to stay legal with the EPA, comes from having an NBB membership.
Q: Where do I get a bus to drive across the country to spread love and biodiesel and democracy and stuff?
A: We don’t know.
Q: Where can I learn more about biodiesel?
A: Take the biofuels class over at Central Carolina Community College.
http://www.biofuels.coop/faq.shtml
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