Ceiling fans help cool your home in summer and push warm air down to the floor level in winter, but running the fan year-around puts wear and tear on the motor. If you want to keep the fan running smoothly you'll need to oil it occasionally. Fortunately, it's easy to oil a ceiling fan -- you don't need any tools and you won't have to disassemble anything. Keeping the fan properly lubricated has the added benefit of eliminating those squeaky noises.
Locate the oil hole by looking on the top of the motor near the down rod. It is usually located there and it will usually be labeled.
Insert the WD-40 straw into the oil hole and spray well. This will remove any dirt or grime on the bearings. Allow the WD-40 to dry and evaporate for 1 to 2 hours before continuing.
Fill the oil reservoir with about 1 to 2 ounces of oil.
Spin the rotor by manually rotating the blades. Let the fan spin for several revolutions.
Fill the reservoir up completely with oil, if it isn't already full. Watch as you carefully pour oil into the reservoir; when it's full it will overflow onto the top of the motor. Wipe off any excess with a dry cloth.