[DeTomaso] ZF Gear Oil Recommendations

[Pantdino]

I saved this post from Les Gray. As far as I am concerned it ends the discussion.  He is referring to Red Line 75w-90 NS Gear Oil. The same conclusions were reached by the Ferrari community, whose cars also run European transaxles.
 
Jim Oddie
 
----------------
 

From: Pantdino <pantdino at aol.com>
Date: Sun, 11 May 2014 00:07:45 -0400 (EDT)
To: <chrisvkimball at msn.com>; <bill at incendium.com>; <detomaso-bounces at poca.com>; <charlesmccall at gmail.com>; <detomaso at poca.com>
Subject: ZF oil -- the right choice
 
Here is a recent postfrom Les Gray which basically answers the question forever:
 
 
The Red Line oil NSdesignation means that in this particular oil there is NO 
additive added to reduce the clutch chatter in most limited slip differentials.
Normally this additive is a good thing and almost mandatory in cars like the 
Corvette which has a fairly high degree of limited slip lock up. 
     Our cars have a two issues with these extra slipperyadditives. Number 
one is our diff uses a rather low limited slip lock up so this extra slip 
actually decreases what little lock up we have. Number two is this additivewill 
inhibit our synchro rings ability to do its job and in extreme cases will burn 
up the synchro rings and the towers on the gears costing big bucks. 
    I've rebuilt ZF's since the late 1970's and have replaceddozens of synchro 
rings & gear sets due to the use of these additives. 
  As Jack DeRyke says "your mileage may vary" !!!!
    

Leslie A. Gray
 
 

 
 
-----Original Message-----
From: Frank Lisi <flisi at si.rr.com>
To: detomaso <detomaso at poca.com>
Sent: Sat, Nov 1, 2014 9:10 am
Subject: [DeTomaso] ZF Gear Oil Recommendations


   Need to change the ZF's oil.  Any recommendations?  I checked the TSB's
   and believe all of recommended lubricants names have changed (possibly
   formulas too).  I think Castrol Hypoy 80W90 (TSB #13) cross references
   to Castrol/Axle Limited Slip SAE 80W90.  Also has anybody tried the
   Brad Penn Limited Slip GL-5 SAE 80W-90?


   All comments are appreciated.

   Frank

 
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-------------- next part --------------
   I saved this post from Les Gray. As far as I am concerned it ends the
   discussion.  He is referring to Red Line 75w-90 NS Gear Oil. The same
   conclusions were reached by the Ferrari community, whose cars also run
   European transaxles.



   Jim Oddie



   ----------------



   From: Pantdino <[1]pantdino at aol.com>
   Date: Sun, 11 May 2014 00:07:45 -0400 (EDT)
   To: <[2]chrisvkimball at msn.com>; <[3]bill at incendium.com>;
   <[4]detomaso-bounces at poca.com>; <[5]charlesmccall at gmail.com>;
   <[6]detomaso at poca.com>
   Subject: ZF oil -- the right choice

   Here is a recent post from Les Gray which basically answers the
   question forever:


   The Red Line oil NS designation means that in this particular oil there
   is NO
   additive added to reduce the clutch chatter in most limited slip
   differentials.
   Normally this additive is a good thing and almost mandatory in cars
   like the
   Corvette which has a fairly high degree of limited slip lock up.
        Our cars have a two issues with these extra slippery additives.
   Number
   one is our diff uses a rather low limited slip lock up so this extra
   slip
   actually decreases what little lock up we have. Number two is this
   additive will
   inhibit our synchro rings ability to do its job and in extreme cases
   will burn
   up the synchro rings and the towers on the gears costing big bucks.
       I've rebuilt ZF's since the late 1970's and have replaced dozens of
   synchro
   rings & gear sets due to the use of these additives.
     As Jack DeRyke says "your mileage may vary" !!!!

   Leslie A. Gray






   -----Original Message-----
   From: Frank Lisi <flisi at si.rr.com>
   To: detomaso <detomaso at poca.com>
   Sent: Sat, Nov 1, 2014 9:10 am
   Subject: [DeTomaso] ZF Gear Oil Recommendations
   Need to change the ZF's oil.  Any recommendations?  I checked the TSB's
   and believe all of recommended lubricants names have changed (possibly
   formulas too).  I think Castrol Hypoy 80W90 (TSB #13) cross references
   to Castrol/Axle Limited Slip SAE 80W90.  Also has anybody tried the
   Brad Penn Limited Slip GL-5 SAE 80W-90?


   All comments are appreciated.

   Frank

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DeTomaso mailing list
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References

   1. mailto:pantdino at aol.com
   2. mailto:chrisvkimball at msn.com
   3. mailto:bill at incendium.com
   4. mailto:detomaso-bounces at poca.com
   5. mailto:charlesmccall at gmail.com
   6. mailto:detomaso at poca.com
   7. mailto:DeTomaso at poca.com
   8. http://poca.com/mailman/listinfo/detomaso_poca.com