alright to address a few things, firstly, I have run bio in my old CR and it ran amazing. I had zero issues with it once so ever. I ran it for 20k or so which isnt all that many miles but again I had zero problems. I sold that truck and now have a 94 f350 with a 95 12valve in it. The only problems that I have had nothing to with the biodiesel at all.
I know that there hasnt been a million tests and all that type of stuff saying that bio is 100% full proof but based on my experience I wouldnt hesitate to run it in any of my trucks. My friends run the same bio in a 7.3, 6.0, 6.5, and 6.6 all diesels from different companies. I can also say that I am by no means a chemist, the stuff just isnt that hard to make! Also i believe that its a great idea to get a book and read about everything before you start dumping bio in, personally I did. I read how to make it and went for it, I learn alot quicker from hands on experimenting.
So you want to know the bad of biodiesel????
1) i drive and am constantly hungry
2) its messy as crap!
thats all
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94 f350 w/ 95 6bt, Nv4500, Valair clutch, 370 Hp Marine Injectors, #4 fuel plate, dodgezilla hybrid turbo, 18* of timing, lazer cuts, 4k GSK, 60lbs springs and a lot more!