Let Me Know if You Have Allison Transmission Fluid Questions

Triker33 wrote:
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?

You can go a lot lot further than 25K miles on transynd in a allison 3060 MHDP transmission

Thanks for joining the forum and offering to help.

Last fall I replaced the Dexron in my 3000MH Allison with synthetic. It was done by the Freightliner RV chassis service center in Gaffney, SC. They used Mobil Delvac synthetic transmission fluid saying it met the Allison specs.

These folks service a lot of motorhomes so I am trusting they used the correct fluid.

Could a TES-295 or TranSynd be used in the new Ford 6 speed trans ? Thanks

I have one question, as I have heard yes and no. Does Amsoil synthetic ATF meet the TES-295 specs?

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.

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.

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.

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 !!!

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?

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).