Let Me Know if You Have Allison Transmission Fluid Questions

donhoward49 wrote:
Ok you guys have convinced me. I am changing over to the Transynd. I have a 2004 Workhorse with the Allison 1000. The manual says refill is 7.4 QT with the shallow sump and 10.6 QT with the standard sump. Any ideas how to tell what sump i have.
Thanks Don

Call Allison with your transmission serial number: 800 252 5283.

Ok you guys have convinced me. I am changing over to the Transynd. I have a 2004 Workhorse with the Allison 1000. The manual says refill is 7.4 QT with the shallow sump and 10.6 QT with the standard sump. Any ideas how to tell what sump i have.
Thanks Don

Okay, here is my question. My service guys just changed both filters inside the transmission and used Amalie TES-389 to fill it last month. This is a 2001 Allison 3000. It does not have an external filter. So if I change it next time to transynd, then I will have to change the fluid at short intervals whenever I open it up to change the filters, right?

A great thread. The 100,000 and 150,000 miles between changes recommended by Tom I assume requires fluid analysis to be sure it is ok to extend the change interval, right? Something I learned or was reminded of is to change my filter every two years even though the fluid is still good in my Allison 1000. I'll bite, what is the fluid that is $10 cheaper per gallon that can give 100,000 miles between changes?

bobschultz wrote:
I know that lack of normal maint and overloading the trans. has caused more problems than anything else. Correct me if Im wrong. Bob S.

You said it! It is almost like Transynd was designed for motorhomes and fire apparatus!! We RVers, like fire departments, misuse our transmissions. Many of us do not change the fluids and filters as recommended. Some of what I have read around here concerning transmission fluids and brake fluids is down right scarey! Transynd is the perfect match for us. Being synthetic, it handles the heat changes much better than dino fluids. It does not break down like dino. In fact it handles everything we throw at it so much better than Dextron can.

Fom what Ive been told Allison Trans Co. approved Dextron III for many years before the introduction of Transyd. Dont know of any documented failures of the transmissions due to fluid type. I know that lack of normal maint and overloading the trans. has caused more problems than anything else. Correct me if Im wrong. Bob S.

Thanks Tom, yes I did use the TranSynd both times I changed the filter.
And I will go ahead and change the spin on filter, as it has been several
yrs. Much appreciate your time and input..........coop

wny_pat wrote:

bobschultz wrote:
Have a 2000 DSDP with an Alison MD 3060 trans. Been reading the forum re. Transyd. Called Allison and spoke to a Tech. Told him with the high cost of fuel I will only be driving a few thousand miles a year. Do I really need to change to Transyd. He said that the Dextron III was ok to use. I changed the fluid and used the high cap. filters. Found Valvoline Dex III at Napa. Bob S.

With Transynd, your transmission will run cooler, not be affected by seasonal temperature changes, and last much longer that it will with the Dextron! Plus you will not have to change the fluid anywhere near as often when running Transynd. With Transynd, you can probably go years between changes provided you change the filters at the recommended interval and have the Transynd analyzed at the same time. The analysis will tell you if the Transynd has any contaminates in it.

Bob,

I agree completely with wny_pat !!! I couldn't have said it better myself. I came up with the concept of TranSynd and wrote the TES-295 spec to fix two distinct problems we were having with transmission fluids. We were experiencing short lives with DEXRON-III fluids and with Allison C4 oils. The DEXRON-IIIs were losing too much viscosity and the Allison C4 oils (mostly engine oils) were oxidizing too quickly. TranSynd and the TES-295 specification fixed both problems and it truly is a great product. So, I'm not sure why anyone would put anything in an Allison accept TranSynd or a TES-295 approved product unless I can come up with something almost as good (with a life around 100,000 miles and about $10/gal cheaper). Would such a product be attractive to you all?

Jarlaxle wrote:

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.

My Genesis has an MT643 trans behind a DT466 engine...Dexron III, right?

Nope !!! I no longer recommend anyone use DEXRON-III. Use TranSynd or another TES-295 for the best possible performance and durability. DEXRON-III is an obsolete spec so anything these days is being manufactured under the label D3/M meaning DEXRON-III/MERCON. These fluids are manufactured and sold but have no license and are no longer approved by either GM or Ford. I used to sit on the GM DEXRON-III committee and I can tell you that these fluids are no longer evaluated by anyone at GM. So, it's sort of like "buyer beware" when it comes to any DEXRON-III (D3M) products on today's market. Also, do not use DEXRON-VI due to possible seal issues with your older MT transmission.

PS: D3M fluids (DEXRON-III) tend to lose viscosity so cooling won't be as good due to lower cooling circuit flow. Unless you change it every 25,000 miles. So, just put in TranSYnd adn you should be good for at least 100,000 miles. Don't forget to change the filters too.

Glenn Cooper wrote:
Tom, thank you for ALL your help!
Now I have a Allison 1000, in my 02 Winnie purchased new by me.
And I changed the fluid twice within the first 5/6 K miles,
fluid and filter. Then about 5 yrs ago I changed the spin on
filter, just because I had it and NEW fluid.
Do you recommedn I change all the fluid twice again?
I have 45 K on the MH at this time. Thanks for your input! coop

Coop,
What fluid did you install when you changed the spin-on and installed new fluid 5 years ago? Was it TranSynd or another TES-295? If you installed TranSynd (or another TES-295 fluid) then you should be good for 150,000 miles on that fluid and 50,000 miles or 24 months on the spin on filter. If you're running TranSynd or another TES-295 fluid then I'd just change the spin on filter at 50,000 miles.

Hope this helps !!