Nothing too expensive, the AX5 you have will probably start losing gears soon...
Seriously, here is the fluid specs from Alldata:
Manual 75W-90 GL5
Transfer Case Dexron II/III
Front/Rear Axle 
Power Steering 4118055 
Brake System DOT 3
 -- Standard duty front & rear differential, 75W-90 GL5;
Rear differential of models w/ trailer towing package, 80W-140 GL5;
Models w/ limited slip differential, add 2 ounces of friction modifier.
 -- Chrysler/Jeep-Eagle part number.
 -- AW4 auto. trans., use Mercon;
w/ 30H or 32H auto. trans., use ATF Plus 7176 or equivalent.