denverhank wrote:
Yes I know the FICM wasn't related to the other issues and the turbo I guess some of you don't notice the labels on the pumps but unfortunately my engine wasn't designed for B20 and I see a lot of labels on pumps saying B20. Take a look at the 6.7 badge, it says B20 on it. That's the difference in having a 13 year old truck. And I do carry additive.
Actually the opposite is generally true. The older engines do the best with high blends of biodiesel as long as the fuel lines are biodiesel compatible. They love it in fact. I know a couple of people running B100 or B99 in their 7.3 PSDs, one with over 100K miles now. No problems at all, but they both did replace their fuel lines before hand. Of course nowhere does the 7.3 say you can use BD, it wasn't around, or at least not widely available when that engine was designed.
The new engines are designed to run on B5 or in some cases B20, but I wouldn't even consider going 1 ounce above the manufacturer recommendations. With the extremely tight tolerances in the injectors and much higher rail pressures, following the manufacturers guidelines becomes critically important. There was definitely a lot more leeway with the older engines!
That said, I don't think B5 is going to cause any issue with your engine and further, I feel confident that any blend higher than B5 will be labeled as such.
