A few days ago my truck started skipping at moderate to about average throttle position (this is nothing new to us, we run WVO and we have become experts at diagnosing and changing clogged filters), so i took the truck as close back home before it would die and had my dad bring me out a "new" filter, and we put it on, and I was on my way again. I had not driven but probably about 12 miles, and the truck was skipping again. Ever since then (about 3 days ago) I can only go roughly about 12 miles before the truck will start skipping again and have to change filter which will only temporarily fix it. What would the problem be, could it be a bad batch of fuel, we had put over 20 gallons of diesel fuel in it over the past week, could it be a sludge build up in the tank over the past 11 years of the trucks life? I do not have a pressure gauge, but I will be ordering one tomorrow. Reason for the quotation marks around new is, that we keep washing out our filters w/ gasoline since we cant seem to find anyone who still carries Fass 95 series fuel filters. Anyone know when the Fass 95 filters will be in stock again, or where they are in stock now?? Anxiously waiting for responses. Oo. 
Will

Will