Let Me Know if You Have Allison Transmission Fluid Questions

[hzjcm8]

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.

[mccsix]

Am I the only you has hard time finding transynd locally? None of the the parts stores know what I'm talking about,so I have to order it thru Qemys.

[hershey]

Not so much as an Allison question but perhaps your aware of the problem with checking the oil in the Allison 5 speed tranny.
Because you have to use the dipstick, its impossible to stab the stick and pull it out and get an accurate level reading. Because of the slosh and the length of the dipstick tube, it picks up oil all over the stick and you get a different reading every time.
I carefully drained the oil and replaced with Transynd to the exact amount recommended and see no sign of leakage so I'm assuming that the level is correct but I'd like the reassurance of an actual dipstick measurement.

[Sully2]

hzjcm8 wrote:
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.

Welcome aboard Tom. Its always super nice ( and greatly helpful) to have a WORKING PROFESSIONAL.

[hzjcm8]

If you're only operating for 4000 miles or so per year, you'd be able to run TranSynd out past the calendar year restrictions. However, you should use oil analysis to verify it. Not just because I now do oil and coolant analysis, but because it's the only way to ensure that the fluid remains stable (from an oxidation, shear, and contaminants standpoint) and that the transmission wear metals are OK.

Hope this helps !!!

[Triker33]

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?

[hzjcm8]

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).

[dadd45]

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

[HIGHFLYER]

Welcome! I think you will be busy here.

[barnaclebill]

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

[kkirt1]

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?

[tenspeedret360]

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.

[routeforty]

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

[gbopp]

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.