My take on this is this:  The “bushings” on the armature of the motor are oil lite bushings meaning they have been impregnated with oil.  The oil come out as the bushings heat up.  I “think” that ALWAYS running the fan on high speed for a few minutes at start-up will make those bushing last much longer.  ALSO, when installing these fan motors the end bushing which on some blower motors are open sided allowing dirt to get in must be covered, I use a suitable sized bottle cap glued in place.  ALL the new blower motors I get now already have a cap over that bushing, so I guess someone down the line got wise.

> On Nov 26, 2015, at 9:00 PM, Automatic digest processor <LISTSERV@GERRY.VANAGON.COM> wrote:
> 
> Re: Front Heater Motor: Lube Dries Out?

      Please note that I will be away from my business travelling from November 16 until April 30, 2016.  Parts orders will be processed although not as quickly as usual.  I will always be available for contact by E-mail.  If you phone your call will be addressed by Steven and he will either call you back or advise you to contact me directly by E-mail.  

Cheers, 
   
Frank Condelli
Almonte, Ontario, Canada
'87 VW Westy, '00 Kawasaki 250 Sherpa, "98 Ducati 750 Monster & Lionel Trains (Collection for sale <http://frankcondelli.com/trainsal.htm>)
Frank Condelli & Associates <http://www.frankcondelli.com/> - Vanagon/Vanagon Westfalia Service in the Ottawa Valley
BusFusion <http://www.busfusion.com/> a VW Camper camping event, Almonte, ON, June 04 ~ 07, 2015