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 > Let Me Know if You Have Allison Transmission Fluid Questions

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hzjcm8

Avon, IN

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Posted: 04/09/11 07:31am Link  |  Quote  |  Print  |  Notify Moderator

Hi all,

I've just joined Good Sam Club. I was the former Transmission Fluids Engineer at Allison Transmission. I held that position from 1990 until my retirement in 2009. Let me know if you have questions about TranSynd, the TES-295 specification or just anything to do with automatic transmission fluids. I'm here to help.


Tom Johnson
Former Transmission Fluids Engineer (Allison Transmission, Inc.)
Avon, IN 46123


gbopp

The Keystone State

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Posted: 04/09/11 07:47am Link  |  Quote  |  Print  |  Notify Moderator

Welcome to the forum.
And, thank you for offering your expert advice.
I don't have any questions at this time however, I'm sure others will.
Thanks again.

routeforty

ohio

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Posted: 04/09/11 07:49am Link  |  Quote  |  Print  |  Notify Moderator

You are a welcome sight on here!! Someone who says they know what they are talking about, and actually has the credentials and knowledge to back it up. Glad you joined. Gary


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tenspeedret360

Orange county,NY USA

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Posted: 04/09/11 07:51am Link  |  Quote  |  Print  |  Notify Moderator

Welcome to the site, and, like gbopp, have no questions, but want to welcome you. Folks like you are what make this site such an incredible resource for help and guidance. Thanks.


Kevin
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kkirt1

Missouri

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Posted: 04/09/11 08:01am Link  |  Quote  |  Print  |  Notify Moderator

Welcome aboard!

I have a 2006 GMC Sierra with the Duramax / Allison combo. There is a ton of discussion about what fluid is best for the transmission. Some have said that upgrading to Transynd is the way to go. I converted about 100k miles ago. Primarily because I wanted the transmission to last longer with the extra 75hp the programmer was pushing through it. I am now getting some drips on the garage floor. Is Transynd the culprit? Should I change back to the GM fluid?


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barnaclebill

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Posted: 04/09/11 09:16am Link  |  Quote  |  Print  |  Notify Moderator

What is your take on changing trans fluid over to a TES 295 fluid? I have a 2003 Cummins 400 with the Allison 3000 that came from the factory with Dexron. Also if changing over to TES 295, should it be changed twice (after XX miles) to remove as much of the older Dexron fluid? Thanks in advance for any info, Bill


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HIGHFLYER

Yuma, AZ

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Posted: 04/09/11 09:42am Link  |  Quote  |  Print  |  Notify Moderator

Welcome! I think you will be busy here.

dadd45

northeast NEBR USA

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Posted: 04/09/11 11:21am Link  |  Quote  |  Print  |  Notify Moderator

Welcome to the forum (and remember you "volunteered)...get your PM system ready and be prepared for MANY questions......IMHO, of course


DadD45
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hzjcm8

Avon, IN

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Posted: 04/09/11 01:22pm Link  |  Quote  |  Print  |  Notify Moderator

Wow. Thanks for the kind words (and the warnings about lots of questions). I'll do my best to keep up.

With regard to what to put into an Allison 1000, 2000, 3000, or 4000 Series, my recommendation will always be TranSynd or another TES-295 approved product (and not just because I approved all of these products). TranSynd (and the other TES-295 products) cannot lose viscosity because there's nothing to shear (no IV improvers). ALso, it's formulated with only PAO (polyalphaolefin) base oils so there's also very little oxidation over many many hours and miles of use. We tested TranSynd for thousands of hours in city buses with retarders and garbage trucks (refuse packers) and never saw any sign of oxidation or shear. TranSynd and the TES-295 specification (which I wrote) did wonders to fix all the problems we (Allison) used to have with C4 oils and DEXRON-IIIH transmission fluids. So, whether it's an RV with a 4000 Series or a pickup with a 1000 Series, you should be running TranSynd for the highest possible performance and durability. It really is worth the money.

About Seals Compatibility - TranSynd has never been associated with seal problems in any Allison lab tests or in any Allison field/fleet tests. So, I don't believe leaks are associated with TranSynd. ALso, when GM first came out with DEXRON-VI, Allison found it was incompatible with older Viton type seals. So, Allison does not recommend the use of GM DEXRON-VI ATF except in GM pickups with the Allison 1000 Series transmission. Allison seal materials were later updated to be compatible with DEXRON-VI. GM sold Allison and after that Allison no longer had a seat on the GM ATF Committee (a seat I used to hold). So, Allison ended its association with GM and removed DEXRON-VI from all recommendations.

One more thing. When changing from a DEXRON-IIIH product, always drain and fill twice to ensure maximum TranSynd content. Flushing machines are not typically recommended and usually give the same results as a double drain and fill (per a test we ran at Allison).

* This post was last edited 04/09/11 05:06pm by an administrator/moderator *   View edit history

Triker33

Homestead, FL

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Posted: 04/09/11 01:59pm Link  |  Quote  |  Print  |  Notify Moderator

For the average MH that only puts on 3-4k miles a year.

Isn't the Allison 36 month filter change and 48 month fluid change of the TES-295 in a 3060MH transmission a bit of overkill.

If you never saw any sign of oxidation or shear under hard use.
Why not let MH go 60-72 months(up to 25,000 miles) before changing filter/fluid?


Larry Full Time Since 99
1999 34Q Discovery DP ISB 275HP 6 Speed Allison
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