Thanks for all the replies. Today I blew out the lines including the water filter and then removed the filter. I put the cap in place and then winterized the coach.
I put some saran wrap over the opening of the filter and placed it in the refrigerator. If we decide to go out in the winter to Al I will reinstall it.
To OEMTech; it is too expensive to replace these filters after using it only a month in one year. These filters are not cheap either. We will try it this way and see what happens.
Again thank you everyone for your thoughts and this ends this post.
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2014 Winnebago Adventurer 35P,Ford F-53, V-10
2011 Ford Escape,2000 Roadmaster Tow Dolly
"Have a Great Day, Enjoy RVing."