That is a lot of damage to the air system.
I have gone over 4 years on a filter on my coach, but drove fewer miles. When I had it replaced at the shop the mechanic mentioned that it was in good condition and would have lasted longer.
There has not been a response to date from any other forum members, that mention a similar problem.
Could you expand on your general area of the country that you live and what areas you traveled in and through over the time the failed filer was in the system. The best you can.
The troubling issue for me is the the powder inside the filter was able to migrate through the entire system. I would think the powder would have to be dry. Had it absorbed some moisture, this would have limited its ability to migrate through the system to the extent it did.
I have to wounder if the cartridge was defective or damaged in some way when it was installed. In that case we all could have a failure of this type.
We live in the Sacramento CA area and our travels have taken us to the east coast twice and numerous places on the west coast durring the time since the filter was changed. Most of the travel has been in the west where the air is dryer. I don't know when it started to disintegrate but the desicant was dry and powdery. It lined the tanks with about an eight of an inch of white powder and also went all through the air system including all the air valves. The failure was such that it caused the dryer exhaust to leak excessively not allowing the compressor to build air in the tanks. I made it home by bypassing the dryer with a piece of hose.
My purpose with this thread was to alert diesel MH owners about this failure and the importance of routine maintenance on the dryer.
I believe my problem was due to neglect on my part for not performing the required maintenance on it. Freightliner recommends 2years or 20000 miles. after this fiasco you can bet that I will follow their recommendations.
Thanks for the interest.