Well, apparently, this has been around for several years, but the docs and dealers are not telling you.
This just saved me a bunch of $$$.


I just talked to Allison and the initial 5,000 mile filter change requirement was done away with when they introduced the high capacity filter.
Follow the below link/pointer for your transmission.
The requirement now for the 3000MH is: 36 mos Filter, and 48 mos Fluid when using the High Capacity Filter (Which is the only one used since something like 2006, maybe earlier)
Fluid/Filter Change Intervals: Service: Allison Transmission
Fluid/Filter Change Intervals: Service: Allison Transmission
To be exact, get the tranny serial number and call Allision: 800-252-5283
Wow!!! 300,000 miles or 6,000 hrs for the fluid
Oh!!! One more thing, for the 3000MH, you'll lose 10 qts of fluid for the filter change and 19 qts for complete fluid change.