I have a new to me 2004 6.0 now and looking into making my own Bio. How does the 6.0 do on Bio?
I have some knowledge of WVO , as I had a 300D with my home made two tank system. But I never went as far as making Bio. My truck is in good condition now. Coolant filter, EC-1, 4", CCV mod , and all temps and volts are good.
A couple of links to processor build would help too, it has been a few years ago that I have looked at doing this.

 

Here is a link to what I believe to be the latest information for homebrewers: How to Make Biodiesel at Home
Plenty of reactor designs, and depending on how you plan to wash, the latest techniqes and processes.

 

Just some advice (you can take it or leave it) but if you have experience with WVO, just stick with WVO. I've read too many horror stories about BioD, both in the engine and in the garage. Not only that, the ingredients for BioD are too expensive. WVO is pennies compared to BioD