The 2500 and 3500 transfer case is a manual transfer case, it is just electrically actuated. The pushbuttons on the dash do not signify "Auto-Trac". Auto Trac is only installed in some 1500's and the SUVs.Just remember!!!! if you have push touch 4x4 (auto-trak) you have to use auto-trak fluid ONLY!!!!
Somebody forgot to tell GMand Allison " ONLY RECOMENDS SYNTEC FLIUD IN THE ALLISON" you could see a littler higher slipping in the clutches.
If you have the stock pan, you'll drain right at 7.5 quarts thru the drain plug. I think the whole system (stock) is 13 quarts. If you have a Mike L cooler and/or deep pan you need more.Anyone know what the fluid capacity is for the Allison 1000? I'm trying to figure out how much Transynd to get for a complete fluid change.
Just checked yesterday, it is now up to $16. I think I got it about 1 year ago for around $12.$12 bucks a case???? I just got it the other day for $27, is it on sale where you are?
I'm using it to flush the tranny and transfer case, it's DexIII and should work just fine.