Wiper linkage lube ?

[Dave C]

What kind of lubricant is recommended for the windshield wiper linkage?

I recently replaced heater core and blower motor on a type 44.  While the
wiper assembly was out I could see the grease was full of dirt and crud.  I
cleaned it up, but couldn't find any mention anywhere of recommended
lubricant.  It looks to me like it may not need any lubricant as the joints
are similar to the throttle linkages under the hood... ball and socket, and
those don't require any lube.

Dave C.