how many tankfuls before changing fuel filters - say if I run a B5 blend ?
In my 6.0 i have been doing it on the second oil change. So about every 6-8 thousand miles. That may be a little much but I really have way to much money in it to have somthing go wrong from a bad filter. You should be good with normal change intervals with b5 blend. If you notice loose of power i would change imediatly. Pluged filters and or not enough fuel pressure will kill every injector with no murcie.