I was thinking that maybe it was time to replace the big filter/desiccant cartridge on top of the air dryer. Could not find the part # with a forum search, see it on the filter, or find it on Beamalarm. After removing it I did find a number: 201160-C. It looked good just a little oil in the middle, no watery sludge like 6 years and 36,000 miles ago when I rebuilt the dryer, but it is time to replace it. Of course after taking it off found the number in my log book. Barry maybe you would like to add the number to your collection. 1996 U270 C8.3-300 Cummins engine.
I added it . Any other model year Air Driers I should add?
Thanks Barry. If you could put all or the Foretravel part of your wonderful website on a CD; I'm sure a lot of us would buy it for those times when we don't have an internet connection.