Some ceiling fans have maintenance-free double sealed ball bearings that never require oiling. Other ceiling fans have a small "oil hole" above the motor. ... If it has such an oil hole, then add 4-6 drops of light machine oil (e.g., “3-in-One” oil) to lubricate the motor.
Steps
# Reference your fan's owner manual. Check to be sure your fan requires oil, because some models do not. ...
# Set up a stepladder. ...
# Turn off the power to your ceiling fan. ...
# Locate your fan's oil hole. ...
# Insert a pipe cleaner into the oil hole.