containing detergent as it will gum the bearings. you can find motor oil at an auto parts store.
there are multiple ways you can oil your ceiling fan depending on what kind of model it is. fans that have oil holes on the top only require a few drops. once you have the oil in, spin the blades to make sure they are fully coated. fans that don’t necessarily require oil take a little more work to get a tune up done. you will need to remove the blades and then remove the motor from the ceiling so you can access the bearings. oil the bearings thoroughly and reassemble. if you 