Archives since 2005:
http://gerry.vanagon.com/cgi-bin/wa.exe?S2=vanagon&L=vanagon&q=&s=mullendore+port&f=&a=2005&b=2020

A couple notable cautions:
Mark Drillock [8/20/2013]
I don't fully support doing the M Port after learning of 2 people who suffered burned up dash wiring when the motor later seized. Both cases involved motors that were pretty frozen up before the lubrication and worked for a while after the lubrication, but could have resulted in the complete loss of the vehicles to fire. Not worth it.

David Beierl [6/14/2016]
I recently took my heater box out after several years of spraying oil through the "Mullendore port" to stop the bearing squeaking -- the oil had made a nasty mess of the commutator, so the more precise your aim the better. Regardless, it's a band-aid.

From: Loren Busch
Sent: Wednesday, January 22, 2020 3:42 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Front Heater Fan Motor Lube?

 Sometime in the past, on a Vanagon list somewhere, Karl Mullendore post a
hack for lubricating the front heater fan motor. It consisted of drilling a
hole in exactly the right place in the front of the van to access the
motor. He posted pictures. BUT I'll be darned if I cn find that now. Anyone
have a clue where those pictures and direction might reside?