I got sidetracked (too busy) and JUST did the gear box oil changes this weekend ... I got the rear axle done on Saturday and the front axle and transfercase Today.
My Commander is a Limited 2006 with QDII, and the original Owner's Manual has the printing error that says to use ATF in the Transfercase, (the online version is corrected)
Mine has never had the fluid changed, I checked the fluid when I drained it out this afternoon and ... the colour, odour, and viscosity was consistent with the proper trafercase lubricant ... it was defiantly NOT ATF fluid.
I have some pics I will post later of a Mod I did too.
Hmmm what kind of mod might you be refering to? It wouldnt have anything to do with extending the breather tubes would it? If so im subscribed!