Former Allison Transmission Fluids Engineer

[gimblerotor]

I just received my fluid analyses from JG labs and my boron, acid, and oxidation levels are too high. The viscosity is 6.7. A fluid change was recommended.
My question is do I need to do a double drain and fill. The PO said he had transynd installed at some point but I'm not sure he did a double fill so the leftover Dexron in the system is probably toast.

[docj]

Originally Posted by gimblerotor

I just received my fluid analyses from JG labs and my boron, acid, and oxidation levels are too high. The viscosity is 6.7. A fluid change was recommended.
My question is do I need to do a double drain and fill. The PO said he had transynd installed at some point but I'm not sure he did a double fill so the leftover Dexron in the system is probably toast.

IMHO if you already had Transynd in the transmission, then a single flush should be Ok. If you think about it, this next flush will be the "second flush" of the double that should have been done the first time!

[Cacique]

Dear Tom how long should the engine run before pulling the transmission fluid for a inspection if the RV is sitting for over a week. Or should it be driven for a certain time or distance before pulling sample.
Thank you in advance

[hzjcm8]

Originally Posted by Cacique

Dear Tom how long should the engine run before pulling the transmission fluid for a inspection if the RV is sitting for over a week. Or should it be driven for a certain time or distance before pulling sample.
Thank you in advance

Ten (10) minutes should be sufficient.

[Cacique]

Originally Posted by hzjcm8

Ten (10) minutes should be sufficient.

Thank You

[CoachStreamr]

Originally Posted by CoachStreamr

Should this procedure work on our 1995 MD3060 w/WTEC II?

Originally Posted by Sundancer268

Only if the transmission was ordered with the oil level sensor. It was an option at that time and not standard equipment. When my 1995 coach chassis was built by Spartan, the oil level sensor was not included. I have thought about adding one to my unit, but the programming costs just don't seem worth the trouble or cost. Over $400.00 to have the last program update seven or eight years ago.

Yes, I had checked mine (with that procedure) and don't have that info at the controller.. assumed it was an option.

It would be nice to have that, I see posts that claim it's more accurate vs checking the dipstick. I may call Pacific Power Group in Kent WA (main Allison distributor in this area) and get a quote.

CALLED: Their programming and calibration is $225 - Service person is calling me back for part price and to verify with their senior Allison Tech that programming will add that option (with part of course) for our 1995 MD3060/WTEC II.

.

[Sundancer268]

[QUOTE

CALLED: Their programming and calibration is $225 - Service person is calling me back for part price and to verify with their senior Allison Tech that programming will add that option (with part of course) for our 1995 MD3060/WTEC II.

.[/QUOTE]
Please let us know what you find out.

[Z714X4]

First off, WOW, its just amazing that Tom Johnson has been participating and openly sharing his knowledge in this thread for so long. Thank you!


I'm new to oil/fluid testing but after reading every one of these posts (it took me over a week, kind of like binge watching a TV show) I must admit I am hooked on testing and this is what I will be doing next year before my two year service. Heck, I might even do this on my 12 year old diesel truck.


My favorite testing lab has been bookmarked in my browser and I already know which kits and pump I need.


Sincerely, thank you Tom!

[Steve Ownby]

Originally Posted by Z714X4

First off, WOW, its just amazing that Tom Johnson has been participating and openly sharing his knowledge in this thread for so long. Thank you!


I'm new to oil/fluid testing but after reading every one of these posts (it took me over a week, kind of like binge watching a TV show) I must admit I am hooked on testing and this is what I will be doing next year before my two year service. Heck, I might even do this on my 12 year old diesel truck.


My favorite testing lab has been bookmarked in my browser and I already know which kits and pump I need.


Sincerely, thank you Tom!

Since you are a brand new devotee of sample testing, I have another idea for you.

Call up JG’s office and ask if they can sell you a “sample port kit”. This is a fitting that screws into an existing threaded port low on the side of the 3000/4000 pan. This will provide you will a hot, fresh fluid sample, under pressure, using a needle/tubing probe directly into a sample bottle.

Once you install the sample valve, which stays in place, you can pull a clean sample in 5 minutes with no pump to carry, clean and fool with. The sample valve is $25-30 and the needle probes are a buck each.

[hzjcm8]

Originally Posted by Z714X4

First off, WOW, its just amazing that Tom Johnson has been participating and openly sharing his knowledge in this thread for so long. Thank you!


I'm new to oil/fluid testing but after reading every one of these posts (it took me over a week, kind of like binge watching a TV show) I must admit I am hooked on testing and this is what I will be doing next year before my two year service. Heck, I might even do this on my 12 year old diesel truck.


My favorite testing lab has been bookmarked in my browser and I already know which kits and pump I need.


Sincerely, thank you Tom!

Thanks for the kind words !!!

[CoachStreamr]

CALLED: Their programming and calibration is $225 - Service person is calling me back for part price and to verify with their senior Allison Tech that programming will add that option (with part of course) for our 1995 MD3060/WTEC II.

.

Originally Posted by Sundancer268

Please let us know what you find out.

I forgot to update this when I received the quote and info. I spoke to Steven Riggs at pacificpowergroup.com in Kent, WA. Rachel emailed me my quote.

There are two Allison transmission wiring harnesses: one that supports that Oil Level Sensor and one that does not. Mine came with the harness without and that is pricey (with the labor). You can lookup your harness using your serial number and its build out info/sheet.

Trans Tag $0.75
Harness $623.00
Oil Level Sensor $335.65
Sump Kit $57.60
Sump Screen $60.60
Transynd $240.00
Recalibrate ECU $225.00
Labor (6 Hours) $810.00

Total With misc, taxes $2650.23



I'd love to have the ability to check the level at the controller but not since I need a new harness. Steven did say they could/would calibrate my dipstick (I believe including in the price) during the conversion to Transynd. I will have them do the conversion as their price is less than Brazel's and they are actually the Allison Distributor in this area.

Steven really knows these transmissions, learned a lot to including about the WTEC II...

.

[kyounger]

Tom, help please. I have an 06 silverado duramax,allison, with 345,000 miles. I am the second owner. I have no maintenance records. The truck seems to have been taken well care of by interior appearance; also has mostly highway miles. I pull a 7500 pound travel trailer.

I have heard many differing opinions on transmission maintenance. My current plans are to simply drain the pain, and add Mobile Delvac 1. I have no idea what is currently in the tranny, or when or if it has been changed. I changed the spin off filter every other motor oil change.

Is it ok to drain the tranny, and use the Mobile tranny fluid? thanks so much...

[hzjcm8]

Originally Posted by kyounger

Tom, help please. I have an 06 silverado duramax,allison, with 345,000 miles. I am the second owner. I have no maintenance records. The truck seems to have been taken well care of by interior appearance; also has mostly highway miles. I pull a 7500 pound travel trailer.

I have heard many differing opinions on transmission maintenance. My current plans are to simply drain the pain, and add Mobile Delvac 1. I have no idea what is currently in the tranny, or when or if it has been changed. I changed the spin off filter every other motor oil change.

Is it ok to drain the tranny, and use the Mobile tranny fluid? thanks so much...

Sorry .... been under the weather for a couple of days. Feeling a little better tonight.

I'd really recommend a fluid analysis. May be that all is OK and you don't need a transmission fluid change. The guys can tell you who to use for your Allison Transmission sample. The analysis would show the condition of the fluid and the transmission and alert you if there might be any wear or contamination that might need additional follow-up. If you use the Mobil DELVAC Synthetic, make sure it has the Allison Approval Number on the container label. The Allison TES-295 Approval Number will be AN-051005
. By the way, TES stands for Transmission Engineering Specification.

If you don't want to do the analysis first, then "yes" you can drain the pan and refill the transmission with the Mobil DELVAC Synthetic ATF. Again, make sure it's the approved one and carries the TES-295 approval number. I'd recommend you change it twice to get the full benefit in case the old fluid is really worn out. Just fill the transmission to the COLD mark, drive the truck for 1/2 hour, drain and fill again and you're done.

Bottom Line: The analysis will tell you for sure. Hope this helps. If you need more, you can PM me and I'll give you my contact info.

[Journey cat]

Since were off topic of Allison. May I ask what synthetic I should use in a Chevy Venture mini van ? That’s always used regular fluid Original owner !