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View Poll Results: Are you currently running oil analysis on your engine or your Allison transmission?
Yes. I'm a believer in oil analysis! 254 35.67%
Not at this time but I might if I knew more about it. 394 55.34%
No. I think it costs too much. 43 6.04%
No. I don't believe in it. I think it's pure "bunk" ! 25 3.51%
Multiple Choice Poll. Voters: 712. You may not vote on this poll

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Old 07-08-2021, 07:26 AM   #1373
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Quote:
Originally Posted by MarkK View Post
Hi Tom.

It's time for a trans fluid analysis but I can't find the instructions for taking the sample in my kit, or online on your website.

How can I get them?

Also, I'm parked for the summer and moving more than about 20' to warm things up is about as much as I can do without a lot of hub-bub. Will that be ok to just warm the engine and move the rig back and forth to take the sample? Guessing engine off before taking the sample.

Thanks
Transmission fluid sampling is the very same as engine oil sampling. Run the engine for around 10 minutes, which will also run the transmission pump and circulate the fluid in the sump. Then, pull the sample with the pump and tubing through the transmission fill (dipstick) tube. Fill the sample bottle about 2/3 full.
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Old 07-08-2021, 07:32 AM   #1374
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Quote:
Originally Posted by tmw188 View Post
Tom how long have they been putting Transynd in Allison transmissions? I sent a sampling into your Indianapolis lab, but when pulling the dipstick there was a tag on it saying it had Transynd in it. It’s a 2002 model MH with a MH 3000. I had an 05 MH1500 that had Dextron III in it revealed in theAttachment 333345 test some yrs ago.
We used it as "FACTORY FILL" starting in 1999, as I recall. Some chassis OEMs were already installing TranSynd at the time. Then, by the early 2000s, most chassis OEMs were filling with TranSynd. An analysis from us would tell for sure.
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Old 07-08-2021, 07:33 AM   #1375
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Originally Posted by tmw188 View Post
Thanks docj, Iíve use it once some yrs back but couldnít remember it.
I think there is a discount code for Irv2 users?
Discount Code = IRV2
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Old 07-08-2021, 07:36 AM   #1376
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Quote:
Originally Posted by Jim_HiTek View Post
What I did was buy a heavy oil suction pump from Harbor Freight for $8. Then bought clear tubing, 12 feet as I recall. Put that down the tranni and oil fill tubes for my diesel RV and sucked out samples. Cleaned the pump between samples by draining, but soapy water, rinse water, and drying would work too. Blackstone can allow for a bit of that sort of thing but you should let them know.

Don't recall any exceptions to warming the engine and tranni according to instructions though, sorry. Oh, wait, yes I do. Contacted them and they said if it's cold when you sample, it's cold, and they can still test it.

That sound all right, Tom?
Yep .... sounds good !! Warmed and circulated fluid will typically give a "more representative" sample.
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Old 07-08-2021, 03:53 PM   #1377
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Tom I did send in a sample, Iíll post a pic here. It said test again in another 15,000 mi. Iím sure itís probably TranSynd but maybe you can comment here. Thanks Click image for larger version

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Old 07-08-2021, 04:47 PM   #1378
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Analysis results?

Hi Tom, I had an analysis done on my trans fluid, and wonder if you have time to have a look, and see what you think.

I have had a "Trans Over-heat" warning a few times, and am wondering if I should be changing the fluid or just keep having it checked.

ps. sorry it's sideways.
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Old 07-08-2021, 06:18 PM   #1379
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I know Tom gets posts with tranni questions here all the time...hope these aren't over the top...

I recently traded in my manual transmission car for an automatic.
It's been quite a shift.

What do you call a suspicious transmission?
Shifty.

The rather oppressive female mechanic was trying to sell me 5 new manual transmissions
Luckily, I managed to escape her clutches.

With thanks to the 'punstoppable' site.
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Old 09-12-2021, 03:07 PM   #1380
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Originally Posted by tmw188 View Post
Tom I did send in a sample, Iíll post a pic here. It said test again in another 15,000 mi. Iím sure itís probably TranSynd but maybe you can comment here. Thanks Attachment 335259
The data show that it's not pure TranSynd, but instead it appears to be a mixture. The oxidation (by FTIR) value is not quite high enough, the viscosity is slightly high and the zinc value is a bit too high.
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Old 10-06-2021, 02:36 PM   #1381
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Mt643

Hi Tom,


I have a MT643 transmission and it has transynd fluid that hasn't been changed in 4 years. Is a 21 year old transmission. Would it be safe to replace the fluid with dexron 3 and both new filter?

Also wouldn't dexron 3 be better for the seals anyways?.


Thank you in advance
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Old 10-06-2021, 04:26 PM   #1382
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If you have Transynd, you don't need to change it and Dex 3 has not been licensed for years. If worried about it, send a sample to an oil test lab like Tom's or Blackstone. Most you should need to do is replace the filters and maybe not that, depending on the mileage you have since the last filter change.
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Old 10-10-2021, 06:39 PM   #1383
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Welcome aboard we are very happy to have you as member.
i just did a transmission fluid and filter change on my 2006 Monaco Diplomat 8.9 isl 400 cummins paired with a Allison 3000 transmission SN6510610445 i wasn't sure what fluid Alison used from the factory in the transmission when Allison first sold it.
I drained the fluid still bright red looked good and changed the filters out with the the new high capacity filter
PN29558329 i purchased Kendallģ SHP 295 ATF is a full-synthetic, heavy-duty automatic transmission fluid designed for use in truck and bus transmissions for use in applications where the OEM specifies a fully approved Allison TES 295 fluid.
I have not added the fluid back to the transmission, i was going to refill it tomorrow but your opinion i belive would carry some weight on my decision on this brand i choose it with the thought that it originally came with a TES 295 in it.
lots of maintenance records but nothing on the transmission service.
Thank you in advance
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Old 10-11-2021, 07:17 AM   #1384
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Quote:
Originally Posted by Soaringcook View Post
Hi Tom,


I have a MT643 transmission and it has transynd fluid that hasn't been changed in 4 years. Is a 21 year old transmission. Would it be safe to replace the fluid with dexron 3 and both new filter?

Also wouldn't dexron 3 be better for the seals anyways?.


Thank you in advance
Test it through JG Lubricant Services. It will most likely still be like new. DO NOT USE any DEXRON-III product as they are no longer licensed by GM. Some could effect seal hardness where TranSynd will not have any effect on your Viton seals.
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Old 10-11-2021, 07:21 AM   #1385
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Quote:
Originally Posted by GMN View Post
Welcome aboard we are very happy to have you as member.
i just did a transmission fluid and filter change on my 2006 Monaco Diplomat 8.9 isl 400 cummins paired with a Allison 3000 transmission SN6510610445 i wasn't sure what fluid Alison used from the factory in the transmission when Allison first sold it.
I drained the fluid still bright red looked good and changed the filters out with the the new high capacity filter
PN29558329 i purchased Kendallģ SHP 295 ATF is a full-synthetic, heavy-duty automatic transmission fluid designed for use in truck and bus transmissions for use in applications where the OEM specifies a fully approved Allison TES 295 fluid.
I have not added the fluid back to the transmission, i was going to refill it tomorrow but your opinion i belive would carry some weight on my decision on this brand i choose it with the thought that it originally came with a TES 295 in it.
lots of maintenance records but nothing on the transmission service.
Thank you in advance
GMN
It's on the Allison Approved Fluids List so go for it !!!
App Num: AN-191011
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Old 10-11-2021, 11:47 PM   #1386
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Transynd life

Hi Tom,

Whats the shelf life of transynd 295 once it has been added to the transmission?

Miles and years?
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