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#2564804 - 03/12/12 12:38 AM Auto-Trak II fluid alternative???
Loobed Offline


Registered: 07/20/07
Posts: 3742
Loc: Northern California, USA


Is there an alternative to GM/AC Delco Auto-Trak II fluid?

I seen that RedLine claims their MTL 70W80 GL-4 Gear Oil is a "Popular replacement for and improvement over ... Auto-Trak IIŽ (#12378508)"

http://www.redlineoil.com/product.aspx?product=50204

Has anyone tried it or heard of other fluids that might also work? I don't think Amsoil has a replacement.

My understanding is that GM AT2 fluid is super secret stuff.
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Engine: 2001 GM 5.3L LM7
Current Fill: Valvoline Synpower 5w-30 w/Pure-One PL25288 filter

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#2577111 - 03/23/12 11:42 AM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
Dr_No Offline


Registered: 07/06/07
Posts: 1231
Loc: Canada
Based on my experience I don't see how the 70w80 will be a good replacement for Auto-Trak II. I don't know the viscosity of Auto-Trak II, but it is thin like ATF. Also, the formula is specific to the transfer case, and its clutch packs. No company has an actual approval for Auto-Trak II.
I would stick with the OEM fluid.

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#2578139 - 03/24/12 02:17 PM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
gomes512 Offline


Registered: 07/02/07
Posts: 638
Loc: Chicago, IL
It appears the same, in color and viscosity at least, to the fluid that is used in Jeeps with the 247 case. That case also has a clutch pack.

A mechanic at a Jeep garage told me that the fluid is just repackaged Mobil 424 but I'm not sure if there is truth to that or not. I think the 424 fluid is just a friction modified tractor hydraulic fluid? If that is the case then I'm sure you could find it for cheap in bulk.

In any case I haven't had the nerve to try it out myself in the Trailblazers' transfer case.

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#2579188 - 03/25/12 03:02 PM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
Chevys_n_Hawgs Offline


Registered: 02/17/12
Posts: 260
Loc: OKC
I have a 99 Blazer. I changed out the transfer case fluid last year. The I think it took around 2 quarts, and it was around $9.xx a quart at the dealer.

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#2590676 - 04/05/12 11:51 AM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
ikarus1 Offline


Registered: 04/28/04
Posts: 83
Loc: North Cackilack
auto-trac = tinted synthetic mercon/dextron with a little extra friction modifier in it for the clutches in the transfer case. I would say any synthetic ATF would be an excellent replacement at a better value.
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#2591105 - 04/05/12 07:08 PM Re: Auto-Trak II fluid alternative??? [Re: ikarus1]
RF Overlord Offline


Registered: 11/08/03
Posts: 3481
Loc: Cape Cod, MA
Originally Posted By: ikarus1
auto-trac = tinted synthetic mercon/dextron with a little extra friction modifier in it
You have evidence/proof of this?
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#2591382 - 04/06/12 12:06 AM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
Loobed Offline


Registered: 07/20/07
Posts: 3742
Loc: Northern California, USA

I wonder if it is Dex 3 with this Lubegard additive?

http://www.lubegard.com/C-177/LUBEGARD+Highly+Friction+Modified+ATF+Supplement


GM and AC Delco Auto Trak fluid comes in 1 liter bottles and not 1 qt bottles. I wonder if it is because it is made outside the US, or because they will sell it outside the US.



Edited by Loobed (04/06/12 12:09 AM)
_________________________
Engine: 2001 GM 5.3L LM7
Current Fill: Valvoline Synpower 5w-30 w/Pure-One PL25288 filter

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#3896745 - 10/25/15 11:47 AM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
SavagePatch Offline


Registered: 05/06/15
Posts: 157
Loc: California
Originally Posted By: Loobed


Is there an alternative to GM/AC Delco Auto-Trak II fluid?


Both Royal Purple Syncromax and Valvoline Transfer Case Fluid are recommended replacements for Auto-Trak II. They're also both full synthetic and can also be used in transfer cases calling for ATF like DexIII.

So if you're not 100% sure what type fluid your transfer case calls for then this is a safe choice. But the best way to know what type fluid your vehicle calls for is to have the dealer look it up by its VIN.

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#3896842 - 10/25/15 02:19 PM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
Ramblejam Offline


Registered: 11/05/13
Posts: 2052
Loc: Kentucky
Originally Posted By: Loobed
My understanding is that GM AT2 fluid is super secret stuff.

How so? Stuff is available everywhere at a not-unreasonable price.

Originally Posted By: Loobed
GM and AC Delco Auto Trak fluid comes in 1 liter bottles and not 1 qt bottles. I wonder if it is because it is made outside the US, or because they will sell it outside the US.

Petro-Canada would be the manufacturer.

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#3896844 - 10/25/15 02:19 PM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
xxch4osxx Offline


Registered: 03/11/09
Posts: 2005
Loc: Cedarbrae, Ontario
For how little you have to change out the transfer case fluid, I would stick with Auto Trak 2.
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#3896871 - 10/25/15 03:09 PM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
Nyogtha Offline


Registered: 10/13/14
Posts: 666
Loc: NW Ohio
Valvoline offers an aftermarket alternative - Valvoline Transfer Case Fluid.

http://www.valvoline.com/our-products/au...sfer-case-fluid

http://content.valvoline.com/pdf/transfer_case_fluid.pdf

I was hoping this would work in my Borg Warner BW44-44 transfer case on my Ram but Valvoline said they don't have a fluid that crosses for the Borg Warner transfer case.

I see O'Reilly carries it.

http://www.oreillyauto.com/site/c/detail...3&ppt=C0207


Edited by Nyogtha (10/25/15 03:17 PM)
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#3896979 - 10/25/15 06:05 PM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
Whitewolf Offline


Registered: 10/05/06
Posts: 2604
Loc: MI, USA
I would stay with the genuine product.
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#3896999 - 10/25/15 06:28 PM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
barkingspider Offline


Registered: 12/22/13
Posts: 923
Loc: socal
I would also use OEM for this application
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#3897030 - 10/25/15 06:56 PM Re: Auto-Trak II fluid alternative??? [Re: Loobed]
MolaKule Offline


Registered: 06/05/02
Posts: 16698
Loc: Iowegia - USA
The Auto-Trak II fluid is a 7.3 cSt@100C fluid (same viscosity as DexronIII/Merc) with a special friction modifier.

Elemental Analysis (what you can see in a $28 analysis):

Boron - 150 ppm
Calcium - 40 ppm
Phos - 300 ppm
Silicon - 3 ppm


Quote:
I would would say any synthetic ATF would be an excellent replacement at a better value.


Better think again.


Edited by MolaKule (10/25/15 07:06 PM)
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#3897326 - 10/25/15 11:54 PM Re: Auto-Trak II fluid alternative??? [Re: xxch4osxx]
SavagePatch Offline


Registered: 05/06/15
Posts: 157
Loc: California
Originally Posted By: xxch4osxx
For how little you have to change out the transfer case fluid, I would stick with Auto Trak 2.


To play devil's advocate and to add to the conversation...

With this opinion shouldn't we all stick with OEM atf in our automatic transmissions too? Especially since it's even less often that it needs to be changed out? Lots of people, including myself, use multi-vehicle ATF's like Maxlife ATF and RP MaxATF in our transmissions with no hesitation and no issues. It's my understanding that an automatic transmission is a lot more complicated of a beast than an automatic or manual transfer case.

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