Great Post! I never realized that it was necessary to lubricate or drain a water filter on these toilets. I haven't done anything to mine since 2005 when I bought the coach. I had Newell service them back then, so I guess it's time to have them serviced again.
Tuga, while I yearly clean and add lubricant to the flapper seal and its sealing surface to prevent leak down (or odor escape!) I am unaware of the water filter you are talking about. Recently I had the toilet out and we went over everything and it all seems good . More info on this water filter?
Thanks![/QUOTE]