The AX5 is expensive to buy parts for and it is a pretty weak transmission. Unless you have a completely stock Jeep I would seriously consider heeding Corrupt's advice. If your Jeep is all stock, and you intend to leave it that way and you do decide to stay with the AX5, do not use GL5 fluid in it, use a synthetic like Redline MT90, Royal Purple, Pennzoil Synchromesh, etc..