Can anyone give me some advice on weather or not to run biodiesel in a 04 ford 6.0 I been running it about 50/50 and 90/20 in summer. Around 145000 miles I had and injector to stick open and the rest of them was not far behind that one.Some how some gerlin got by my 5 filters and ended up in my tank. I have been drawed up every time I use B/90 but fuel going up it is hard not to want to use it. My brother inlaw and I have made around 800 gallons so far and have learned alot since we started it. We have use it in his truck which is a chevy. with a durtec in it and he been running it b/100 on and off when supplys last for two years and the only promblems he has had is the fuel filters stoping up time to time. We also been running it in our fram tractors we have and 80 horse ford tractor and a m/f tractor 80 horse nothing they run great just changed the filters.Please if their are any 6.0 fixs for my ford out their please let me know.
Thank you
Anthony

Your fuel filters plugging up from time to time is somewhat normal when running on and off with biodiesel that is nothing to be concerned with. I would recommend installing a fuel pressure gauge after the fuel filters to monitor the fuel being supplied to the injectors. If you got 145,000 miles and only needed one fuel injector on a 6.0 you did fairly well. I would not blame the bio for that unless the fuel is poor quality. With that kind of mileage on that motor it is to be expected that injectors will start to fail. You would not have gotten that many miles had you be running straight veggie oil, however chances are good that could have happend with dino diesel as well. Hope this helps let me know if you have any further questions.

Thanks for your response.

Sorry to cut in Boatright, but my question centers around yours as far as running biodiesel. According to my owners manual, I can run B5 without any warranty issues on my '07 F350 6.0L, but I read elsewhere I could even run B20 without any issues, except warranty. I have 53k miles on my pickup. Which would be the wise way to go?

follow the manufacturer specs of 5% if for no other reason than to keep your warranty.
I have run 50k miles of b100 on my 04 6.0
Couple of plugged filters, and I think I have a lazy injector that doesnt fire right on the first start up of the day. But at 175k miles total...I highly doubt that is from the bio

I doubt it either. Not that I know anything. But I did watch a show called Cool Fuels, about an Australian driving across USA using alternative fuels. The problems he faced when breaking where not bio related.