I just picked up a used 2007 Double Cab Long box with the 4.0 V6 and 5 speed auto, 4x4.
I'm a big Amsoil fan (use their products a lot for everything they make one for). I'm going to bring it into the dealer (family member works there) and have a transmission flush with Amsoils new Low Viscoscity Auto tranny fluid. You obviously need more fluid than the fill capacity of the transmission to do a flush - how much do you think I should buy for the flush?
Also, the transfer case takes regular gear oil and doesn't share transmisson fluid with the automatic transmission, is that correct?
Also, what is the real world capacity of the engine oil to the full line. I know the manual doesn't give you this exactly (with filter).