Let Me Know if You Have Allison Transmission Fluid Questions

gswcgi wrote:
I have a 2003 DP I bought new with an Allison 3000 transmission and a CAT 3126E engine. The Allison came out of the Monaco factory with Transynd in it. The Allison manual said I should change the fluid at 5,000 miles including the filters, which I did. I was lead to believe that the fluid did not have to be changed again until 150,000 miles. I now have 38,000 miles on the rig. Should I change the fluid and filters now? Is Transynd in the Allison transmission not good for 150,000 miles? Thanks for your expertise.

I had a 2002 Allison 3000 with transynd and no where do I read to change trans oil in 5000 miles.I would consider changing the filters around 30K miles and topping off but thats it.NO way do u change allison transynd oil at 5000 miles.Never

wilanddij wrote:

An alternative to this to convert from Dexron to Transynd is to drain and fill with Transynd, run two years, and drain and fill with Transynd again.

For each drain & fill, how much fluid would I need for an Allison 1000 (4speed w/OD) tranny?

This is OK but you won't be getting the full benefits of TranSynd, both the oxidation resistance and the viscosity stability will be effected dramatically by the DEXRON-IIIH. With only one drain and refill, you'll still have over 60% DEXRON-IIIH in the system when you consider the oil volume in the torque converter and cooler lines. Best to change it twice and be done with it. Then, you're good for the full TranSynd drain intervals. With the mix, oil analysis will show the viscosity will continue to drop.

PS: Sump capacity on a 1000 Series is 13 quarts (shallow pan) and 15 qts (deep pan). Plus any makeup for the filter.

I'm always interested in how a person gets into a job.

How did you work your way into your position?

I have a 1000 series six speed Allison in a 2011 Workhorse chassis. When hot, fluid is a little above the cold mark. How many quarts/liters needed to bring into hot range? Who should have filled this transmission properly, Allison or Workhorse. Thanks.

wilanddij wrote:
For each drain & fill, how much fluid would I need for an Allison 1000 (4speed w/OD) tranny?

I have the same transmission and just draining the pan I have to fill with just short of 12 quarts.

gswcgi wrote:
Hzmjch8
I would appreciate an answer to my posting. Thanks, gswcgi

How about the book answer?: http://www.allisontransmission.com/service/changeinterval/recommendation.jsp?model=3000&voc=MH&type=3k&prognostics=false&question=false&severe=false&fluid=tes295only&control=0&modelyear=priorto2009&sMPD=null&sHPD=null&sDPW=null&sUNIT=null

Hzmjch8
I would appreciate an answer to my posting. Thanks, gswcgi

An alternative to this to convert from Dexron to Transynd is to drain and fill with Transynd, run two years, and drain and fill with Transynd again.

For each drain & fill, how much fluid would I need for an Allison 1000 (4speed w/OD) tranny?

hzjcm8 wrote:
Dicnic,

A double drain and refill goes like this. Drain the current fluid, toss it (dont' reuse it) and refill with TranSynd. Drive the RV around until it's warmed up and shifted through the gears. Then, drain it again and toss it (don't reuse it). Change the filters and refill with TranSYnd. At this point, you're good to go. Run it until oil analysis says it's time to change.
Hope this helps !!!

An alternative to this to convert from Dexron to Transynd is to drain and fill with Transynd, run two years, and drain and fill with Transynd again. This is what I did and is a little more cost effective and what I believe is the best way to convert, but not the quickest.

hzjcm8 wrote:

wagonmaster2 wrote:
Not necessarily a question for Tom, but since we're talking about a tranny fluid analysis how is the easiest/best way to get enough fluid to send in for the analysis? When changing the fluid it would be easy but when not changing it what do you do to keep from contaminating the sample you get?

Wagonmaster2

Wagonmaster,
The easiest way to collect a sample is down through the dipstick tube. You'll want to sample the fluid warm or at normal operating temperature. What sort of contamination are you concerned about? Are you worried about maybe collecting some dirt or dust with the sample from around the dipstick tube (oil fill tube)?

Didn't know if it was possible to really clean off around the drain plug then loosen it enough for just what was needed for the analysis to run out and retighten the plug. Could imagine getting sediments from around the plug or other contaminates from under the transmission.
What kind of tube or suction will be needed going down the dipstick tube, and about how much fluid is usually needed for the analysis?

Should the filters be changed periodically even if the fluid analysis checks out okay since Allison recommends changing the filters every 36 months with Transyend?

Thanks for all this expert advice.

Wagonmaster2