Posted for Walter Atkinson <walter@advancedpilot.com>:

 Dom:
 
 On the old radial engines, that is true.  It was possible to have cold oil
stay in the hub without deep cycling.  On the DC-3 and C-46 I fly, that is a
very real issue.  We deep cycle those--and on a cold morning we do it several
times.  Not so on our props on GA aircraft.   The hubs are so much smaller and
the oil quantity is so much less it's a diiferent issue.
 
 Walter