Brake/Clutch pedal lubrication

["Tom Witt" <wittsend@jps.net>]

   Would there be a good reason not to fit the brake and clutch pedal arms
with zerk fittings and use grease (Molygraphite) as opposed to lubricating
with oil as the car originally used.  Will the grease thicken and cause
problems as opposed to the oil which primarily evaporates.  Thanks for any
input.
 Tom Witt