These are the reasons why i believe Bio-diesel needs further development. Bio works GREAT except the tuning for DPF filter equipped vehicles causes the bio-diesel to build up even worse as well *** "wash" cylinder walls causing severe engine wear. In the future bio-diesel with a higher flash point will allow the new trucks to meet emissions without a DPF or EGR. We just need more people with fleet vehicles willing to work with bio-diesel production companies. Sorry to jack...i just get pissed. You've spent a TON of money, time, and it's also a huge risk to your company to be without the vehicles needed to do the work. We need new fuel standards and a new approach to it. It's in our hands though.