I've had the Jeep a little over a year; the TPS was replaced immediately (glitched on the 3rd day i had it).
I do not know the previouis owner maint. but the Jeep was in amazing shape. Just needed brakes and larger tires
Fluid smells/looks fine; but i assume that it has not been changed. Had no real issues other than i was overdrive at 40mph and it was a DOG to get it to downshift.
Drove it a good bit yesterday and it seems to be ok; shifts are firmer but it is much more responsive. Lets's hope this helps the gas mileage situation.