I've got an old Master Plumber (True value) whole house water filter
setup in my garage right after my pressure tank, and lately when I
change out the sediment cartridge, it's become increasingly difficult to
loosen the filter housing to get to the cartridge. I do eventually get
it, while trying to put minimal strain on the pipes (fortunately, I can
brace the pipes with my shoulder as I'm trying to unscrew the housing),
however it seems to be more difficult than say a couple of years ago.
I've taken to greasing the O-ring with silicone grease after loosening
it, but it doesn't really seem to help. I have heard some people say
that a strap wrench on the filter will be much better than the supplied
filter wrenches that just grab the fins. I also always open a downstairs
faucet before attempting this job. Does anybody have a suggestions as to
what could make this task somewhat easier?
Thanks in advance for any help.

Tony

P.S. Around a year ago, on advice from a friend, I lubricated the
threads of the filter with Vaseline, not silicone. Could this be helping
creating a problem now?

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