Former Allison Transmission Fluids Engineer (Mr. TranSynd) - Chevy and GMC Duramax Diesel Forum
Transmission Shop Discuss the Allison OEM, aftermarket, and the ZF-6.

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post #1 of 1352 (permalink) Old 05-17-2011, 07:18 PM Thread Starter
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Smile Former Allison Transmission Fluids Engineer (Mr. TranSynd)

Hello to all on this forum. My name is Tom Johnson and I was the Transmission Fluids Engineer at Allison Transmission from 1990 until my retirement in 2009.
Since my retirement from Allison, I'm free to engage in these forums and set some things straight and answer any questions you might have concerning TranSynd or the Alllison fluid specifications (TES-295 and TES-389). I'm also on other industry forums as well and have been getting some really good questions. Incidentally, I wrote most of the current Allison specifications and approved nearly all the oil and fluid products for Allison's On-Highway transmissions (1000/2000 and 3000/4000 Series) and also for the Off-Highway transmissions (5000 thru 9000 Series).

I served on the Lubricant Review Institute's Engine Oil Review Committee for US Army specification oils. I was also a member of the GM Automatic Transmission Fluid Committee for many years where I helped review test data and approve DEXRON-III and DEXRON-VI formulations for GM cars and trucks.

Hope I can help.

Last edited by TDFDiesel; 09-23-2012 at 12:01 PM.
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post #2 of 1352 (permalink) Old 05-17-2011, 07:20 PM
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welcome.
and to settle this, in the 2006+ year models, are you supposed to run dexVI? or what.

i run transynd but others have debated forever.
so what's your professional opinion?

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post #3 of 1352 (permalink) Old 05-17-2011, 07:22 PM
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Welcome!! Your knowledge and willingness to help will definantly add value to the forum!
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post #4 of 1352 (permalink) Old 05-17-2011, 07:25 PM Thread Starter
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Quote:
Originally Posted by Dmaxryan10 View Post
welcome.
and to settle this, in the 2006+ year models, are you supposed to run dexVI? or what.

i run transynd but others have debated forever.
so what's your professional opinion?
Dmaxryan10,

Allison published S/N cutoffs for transmissions with DEXRON-VI compatible seals. However, Allison no longer recommends DEXRON-VI for any of their products. TranSynd, or one of the other TES-295 fluids, is the best answer.
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post #5 of 1352 (permalink) Old 05-17-2011, 07:25 PM
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Welcome! Looking forward to you laying down some knowledge for us.

Sent from my DROIDX

2001 CCSB

built trans . S464 . AD2 165 . 7" stack
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post #6 of 1352 (permalink) Old 05-17-2011, 07:25 PM Thread Starter
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Welcome!! Your knowledge and willingness to help will definantly add value to the forum!
Thanks !!
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post #7 of 1352 (permalink) Old 05-17-2011, 07:27 PM Thread Starter
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Originally Posted by i_keyser View Post
Welcome! Looking forward to you laying down some knowledge for us.

Sent from my DROIDX
I'll try to keep up.

PS: I'm doing this because, when I was at Allison, I couldn't be involved but I could see where some forum info was very good but other inputs were flat out wrong. So, I'm here to lend what I know.

Fair enough?
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post #8 of 1352 (permalink) Old 05-17-2011, 07:36 PM
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Sounds good to me. Welcome to the forum

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post #9 of 1352 (permalink) Old 05-17-2011, 07:44 PM
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As long as you tell the truth Tom. remember that most everyone on these boards runs programmers and many have built transmissions. Your fluid recommendations might not be correct for clutch material that wasn't tested by Allison.
We all know that TranSynd and Mobil Delvac are the best fluids for stock Allisons and use the same exact package of addatives. The smell the same and have the same texure, so they are clones. castrol and Mobil are the only 2 companys that produce TES 295 fluid and all the other brands that are acceptable to Allison are rebadged from these to companys. The real TES 295 fluids are the absolute best for towing and heat with better lubrication. They are not the best for high preformance use.
Welcome.
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post #10 of 1352 (permalink) Old 05-17-2011, 07:44 PM
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Welcome to DF. Glad you are apart of DF.

Take care,
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