Some folks think I am crazy, but I have damaged most of my filters....
Many, many filters have rust, and in spite of the coal on the inside, they often rust through from the inside...
With a couple of exceptions, I have emptied all my filters, for 2 reasons that come to mind....
1) Many filters back then were used to filter poison Gas.... there may be a tiny chance that there is a residual danger left in them..
2) More importantly... I prefer to ruin a filter by emptying it, and treating any rust spots from the inside and the outside, than to leave it 2untouched" and over the years see the rust eat it away.
What do you guys think?