This is what Amsoil gives for fluid in an '01 Wrangler.

Manual Transmission,NV3550......GLS [1]
Synthetic Synchromesh Transmission Fluid (5W-30) (MTFQT)
Manual Transmission,EX NV3550......GL-3
Synthetic Manual Transmission and Transaxle Gear Lube (75W-90) API GL-4 (MTGQT)

I wouldn't put 'good' oil in it until I figured out what the leak was from though.