They only area I know of in the area that really sells it is down in Maryville several Exxons have Biodiesel down there in B20. I have ran it a few times and my truck really liked it but thats in the summer I would make sure you add some good additives (Diesel Klean) if you run it in the winter. Maryville is trying to " Go Green" so they are adding it alot here lately.