Been there, Done that...
Geez guys-n-gals,
Scenario 1: Uh-Oh. Noisy fan. Open the unit up, drop of oil on the thing, seal it back up Saved $10 in parts, spent $6o in labor (or whatever). Done now. 3 months later, do it again, or more likely, now replace the fan. Spent $10 in parts, $60 in labor. Total cost=60+60+10=$130, plus time lost on something else cuz I had to re-do the thing.
Scenario 2: Uh-Oh. Noisy fan. Open the unit up, replace the fan, go get a Coke. Cost=60+10+1(for the coke)=$71. And 3 months later, I don't have to do it again.
This ain't rocket science, folks. Even an inveterate tinker like myself would rather fix it right the first time, SPECIALLY if it's this cheap.