I don't get back here much, but if you check out some of my older posts you'll see that I got started with The Secret (A.K.A. Scam) and then learned a lot more. I have made biodiesel (I'll sell you my 80 gallon Apple Seed if you want it) but for me, fuel blending along the lines of what Diesel Secret is touting, continues to be the best option for me. It's not as simple as the Diesel Secret people would have you believe, but with time, patience and a few extra steps, it has worked well for me.

I am still running a blend of WVO in the two vehicles I started with 3.5 years ago. Google my screen name and you may find some of my posts. Info Pop's Fuel Blending forum has a lot of good info.