Still using BDs I bought in 1976 and I know that for sure because I replaced the flags with the American flags I got for the bicentennial. Never re-lubed or serviced in any way. Just stored flat during the off-season.
I’ve gone through 3 sets of orange round Frabill’s. I usually only fish tipups when it’s too cold for anything else and once they freeze up you might as well throw it away because they freeze a lot faster each time after that. They also don’t spin as freely as a BD so light biters will sense the tension.
There’s lots of cheap foam hole covers for the BD on days you need a hole cover. It does help to buy the little handle thingy for winding up line though. They are a b*^&# to reel in line after a long runner on a bitter cold day. My hands are turning blue thinking about it.
I pretty much gave up tipups though. If it’s that cold don’t go otherwise use a rod and reel in a wire rod holder with a foam bobber. If you clear the snow away from around the hole you can still see the bobber from 20-30 yds away. Setting the drag real loose will also let the fish spool line freely while striping line off without coils. The big advantages of that is you can also see the rod tip bend a bit from a distance but just you and you don’t have every fool on the lake yelling FLAG!!! It also allows for much lighter lines – I use 6-8# even for large pike and you get the joy of fighting a fish on a rod & reel which is tons more exciting the hand lining in fish on a line resembling cabling. When it’s time to move or pack up for the day it’s also lots faster putting a jig pole away than winding a tipup and securing it so you don’t get a mess when it’s time to put it all away.
The best tipup is no tipup.