I just clued in that I have had fishing gear for 40 years and haven't done any maintenance other than change line.
None of my friends grease or oil their reels either, when I started to ask.
25 to 40 year old reels are still working just as well as ever.
Haven't bothered to file hooks either, just replace broken/bent hooks.
Does anyone do grease/oil maintenance on their reels?
If so, what frequency and do you feel the benefit from it?