I have a 10-12 year old Hunter ceiling hugging ceiling fan. Runs great
except when it's on low. Lately it makes a pulsating humming nolse when
it's on low in either direction. My question is, is the shaft on this
fan supposed to be oiled or is it a sealed system? And, if it is to be
oiled, what type of oil do I use?
Yard and Garden Handyman