"Lloyd E. Sponenburgh" lloydspinsidemindspring.com fired this volley
in . 3.70:

For grins, try "lubricating" the bearings with an excess of a solvent-
based break-free like P-Blaster or Kroil. Try not to get it on the
coil, but let the excess run out of the bearings into a rag.

Oh... if the fan is plastic, keep it off that, too. Many of the plastic
fans are made of polystyrene, and P-Blaster will dissolve styrene. (fast!)

LLoyd