I replaced my o-rings last time I changed my oil.
It seemed like I was having to tighten my filter cover bolts almost to the point of braking one of the heads off to get the cover to fit
tight enough to not leak a little oil once I started the bike.
Of course, having snapped the head off one of those butter soft bolts when I did my first oil change on the bike, I'm always as nervous as a
long tailed cat in a rocking chair factory when it comes to torquing those bolts anyway.
So I thought maybe my o-rings were in need of replacement.
Piece of mind at such a minimal cost is worth it.
How expensive are those o-rings? I honestly don't remember.
I don't feel the need to replace them every oil change if that's your question.
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2008 WR250X
Gearing: 13t - 48t
Power Commander 5 / PC-V
Airbox Door Removed - Flapper glued - AIS removed
FmF Q4
Bridgestone Battlax BT-003rs