AMC issued a service bulletin in the early Eighties and only allowed a special lubricant to be used, referred to by the mechanics I am told as "Fishoil" due to is smell. The bronze internal components were being eaten by regular gear oil and leading to warranty claims.
if you look on the Internet this debate rages across many websites as to which is the right one. Some say ATF, some GL5 (maybe I meant GL4) , some a homegrown soup of various lubricants.
BagusJeep lives in Bali.
1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE