Here's another link that might help:
http://www.frybrid.com/forum/
If you look at the conversion section, someone has done a 240D. The pics and writeup are excellent. I haven't run BioD nor WVO myself. I've meet a few who have run the stuff for a few years. One has run SVO unheated for 2 years. Still, I'd consider it experimental and if you can't afford to have your engine or injector pump replaced, then I wouldn't. I think we have all seen people who do odd stuff and it works for them, but not for others. I plan to try and run some type of WVO or BioD in the future though.
Tom