I was surprised while checking the air filter element a while ago at the large amount of crap that was in the filter container (not to mention the amount of water too). It seemed an inordinate amount that should not be there so I decided to "look" into it, and immediately figured that with the intake on mine (any many others) being just below the roof-line, that it is natural for all the crap going over the roof while driving and what gets caught in the vortex created at the rear, to be sucked up and ingested into the piping. I decided to make a small deflector to hopefully stop this (and a side benefit turned out to be my rear camera stays clean and usable while driving in rain). I have a few pictures of this that Barry has graciously included in the "Modifications Section" on Foretravel Technical Help pages. I have just completed a 11,200 mile journey across Canada, down the East Coast of US and (yes) a few thousand miles thru Mexico then back home, and the air filter is still almost looking like new. I figured there was about a teaspoon of dust inside the "can" and the filter was dry even with the last 2 days being very wet in Oregon and Washington. This is a simple thing to make and does not deter from the looks of my coach. I did not paint it but will once the weather gets a bit better.
Hope this helps if you too are concerned about your air filter.
THIS TOPIC I HAVE NOW PLACED IN THE "FORETRAVEL RENOVATION"SECTION
John
2000 U295 36
where can i see the photos?
In the renovation section.