[200q20v] Re, Synthetic Trany oil [M1 75W-90]

Paul Waterloo pwaterloo at compuserve.com
Fri Dec 8 16:33:49 EST 2000

I also have put this gear lube in my 91 200q when it had 90K, shifted soooo much smother, I have also used it in my old 5KQ, it worked wonders for hard shifting....

Paul Waterloo
Applied Energy Services
Phone 708-524-9464
Fax 708-524-0079
Voicemail/pager 888-962-7304
pwaterloo at compuserve.com

  ----- Original Message ----- 
  From: Glen Dustin Powell 
  To: PeterBergin at aol.com ; 200q20v at audifans.com 
  Sent: Friday, December 08, 2000 12:55 PM
  Subject: RE: [200q20v] Re, Synthetic Trany oil [M1 75W-90]

  "Mobil 1 Synthetic Gear Lubricant is suitable for all automotive applications where lubricants meeting MIL-PRF-2105E, API
  Service GL-5, are recommended. It can also be used in rear axles where an API Service GL-4 lubricant is recommended. It
  should not be used in any transmissions requiring an engine oil or automatic transmission fluid, or GL-4 performance level."
  Note the last sentence. That last sentence implies that GL5 does not supercede and/or is not a superset of GL5 requirements. Wish they offered more detail on this specifically. Could be a CYA. They do say it "outperforms all conventional gear lubricants", so if GL4 is offered in a dino-juice formulation then "outperforms all conventional gear lubricants" sortah implies that M1 would 'outperform' dino-based GL4.
  I use Mobil 1 GL5 75W-90 anyway with 215,000 miles on my ur-q trans and many miles on the 4KQ road-race car, other quattros, and my antique Poniaction RA IV 455HO T/A mit Doug Nash 4+1 five-speed with no problems ever observed. I don't recommend others do this tho... . . . but it werks OK fer me...
    -----Original Message-----
    From: 200q20v-admin at audifans.com [mailto:200q20v-admin at audifans.com]On Behalf Of PeterBergin at aol.com
    Sent: Friday, December 08, 2000 1:22 PM
    To: 200q20v at audifans.com
    Subject: [200q20v] Re, Synthetic Trany oil

    I recently bought Castor Synthetic GL5 for my 200 from Jim Blau, and was told 
    that it meets or succeeds all GL4 specs.  I have also been told this from 
    another source.  I would like to confirm this before I change all tranny and 
    diff  fluids soon.  Any one know for sure?  I was also told that GL5 is a 
    newer fluid that may not have been in use at the time of our cars manufacture. 

    Thanks for your considerations and thoughts. 

    91 Avant 
    86 Avant (for sale) 
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