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Dex 6 vs Auto Trak II for GM Transfer Cases #4622739
01/03/18 02:11 PM
01/03/18 02:11 PM
Joined: Dec 2017
Posts: 3,925
SE British Columbia, Canada
Snagglefoot Offline OP
Snagglefoot  Offline OP

Joined: Dec 2017
Posts: 3,925
SE British Columbia, Canada
I tried to search the forum for info on Auto Trak II but couldn't find much. Since about 2007 or 08, GM has been using transfer cases build by Magna Powertrain. Two of the models are Auto Transfer cases, in other words, they have an Auto setting that allows the 4WD system to sense wheel slippage and apply the internal clutches to engage the system. The two are MP 3023 and MP 3024. The owners manuals for all the GM trucks since 2008 call for Dexron 6 for the transfer cases and a service interval of 45,000 to 50,000 miles for severe duty. I got in touch with two GM dealers from two different cities to confirm that I should be using Dexron 6 for the MP3024 transfer case but both told me I should be using Auto Trak II because its an "Auto" transfer case. The owners manual does not reflect this. Has anyone else seen this advice from the GM dealer? Please keep this discussion to just Auto Trak II vs Dexron 6. I know there is other advice out there for other fluids, but I just want to clarify the advice that's coming from GM. Thanks.


If you want the job done right......do it yourself.
Re: Dex 6 vs Auto Trak II for GM Transfer Cases [Re: Snagglefoot] #4622847
01/03/18 04:02 PM
01/03/18 04:02 PM
Joined: Nov 2006
Posts: 21,247
MA, Mittelfranken.de
Trav Offline
Trav  Offline

Joined: Nov 2006
Posts: 21,247
MA, Mittelfranken.de
This is a detail of the transfer case, its specs Dexron VI.

Quote:
Several models are available
for each application, including the
1222/1225 and 1226 manually shifted
units, the 1625/1626 electrically shifted
units, and the 3023 and 3024 auto/
active transfer case models (figure 1).
All models use DEXRON VI fluid.
The models features are shown in the
accompanying chart. (Chart 1)


http://www.evopower.ca/mrws/filedriver/MP_Transfer_Cases.pdf

I also found this..

Quote:
All Magna Powertrain (MP) Transfer Case use ATF (Dexron VI)

No more AutoTrac fluid from 2007 on


ASE L1, Master. Deutsch Meisterbrief.
Re: Dex 6 vs Auto Trak II for GM Transfer Cases [Re: Snagglefoot] #4623148
01/03/18 09:56 PM
01/03/18 09:56 PM
Joined: Oct 2014
Posts: 1,444
NoVA
Jimzz Offline
Jimzz  Offline

Joined: Oct 2014
Posts: 1,444
NoVA
I believe the Auto Trak II is just Dex3 with more friction modifiers. Most use Dex6 or other synthetic trans fluid now as replacement.
You can also use Valvolines Transfer case fluid. Most parts stores carry it.


yup
Re: Dex 6 vs Auto Trak II for GM Transfer Cases [Re: Snagglefoot] #4623268
01/04/18 12:28 AM
01/04/18 12:28 AM
Joined: Feb 2015
Posts: 905
Sask, Canada
BrianF Offline
BrianF  Offline

Joined: Feb 2015
Posts: 905
Sask, Canada
Amsoil Multi vehicle ATF is saying it is compatible. I cant remember if it is the LV fluid though...


2006 Trailblazer LT. QSUD with Fram Ultra.
2017 Ram 3500 SLT Megacab. Duron SHP 10w30 with Hastings LF608.
1993 GMC 1500. QSAD with Fram PH5
Re: Dex 6 vs Auto Trak II for GM Transfer Cases [Re: Snagglefoot] #4623278
01/04/18 12:55 AM
01/04/18 12:55 AM
Joined: Dec 2017
Posts: 3,925
SE British Columbia, Canada
Snagglefoot Offline OP
Snagglefoot  Offline OP

Joined: Dec 2017
Posts: 3,925
SE British Columbia, Canada
Thanks everyone. I appreciate the thoughts on the alternate fluids but Im most interested in finding out why the GM dealers where recommending Auto Trak when the owners manual clearly said Dextron VI. Has anyone ever seen a Service Bulletin on this? Thanks.

SF


If you want the job done right......do it yourself.
Re: Dex 6 vs Auto Trak II for GM Transfer Cases [Re: Snagglefoot] #4624365
01/04/18 11:57 PM
01/04/18 11:57 PM
Joined: Dec 2013
Posts: 2,849
Fort Worth, Texas
clinebarger Offline
clinebarger  Offline

Joined: Dec 2013
Posts: 2,849
Fort Worth, Texas
My sources call for Dexron VI in Magna transfer cases, Auto Trak II fluid is for the Auto & Part Time Auto New Venture-New Process transfer cases like the NP246.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: Dex 6 vs Auto Trak II for GM Transfer Cases [Re: clinebarger] #4624690
01/05/18 10:26 AM
01/05/18 10:26 AM
Joined: Nov 2006
Posts: 21,247
MA, Mittelfranken.de
Trav Offline
Trav  Offline

Joined: Nov 2006
Posts: 21,247
MA, Mittelfranken.de
+1 mine too. I was a the GM dealer this AM and asked a friend of mine to look for a TSB, nothing. Dex VI is the recommended fluid.


ASE L1, Master. Deutsch Meisterbrief.
Re: Dex 6 vs Auto Trak II for GM Transfer Cases [Re: Snagglefoot] #4627843
01/08/18 09:17 AM
01/08/18 09:17 AM
Joined: Dec 2017
Posts: 3,925
SE British Columbia, Canada
Snagglefoot Offline OP
Snagglefoot  Offline OP

Joined: Dec 2017
Posts: 3,925
SE British Columbia, Canada
Thanks for the input. I too believe the answer is Dexron VI. If anyone ever ever sees anything to the contrary please chime in. Thanks every one and stay warm.

SF


If you want the job done right......do it yourself.
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