this is my thinking so i assume wj runs fancy fluid ? is the 3.1 the one with no dipstick on the tranny ?
Before I did my last autobox oil change I did a fair amount of research for compatibility issues.Before you put ATF+4 in your WJ you may want to read this. http://dodgeram.info/tsb/2006/21-010-06.htmApparently the additives in ATF+4 have been found to attack the oil seals in early Mercedes/Chrysler boxes