"Life" is open for discussion and definition. Going with ZF, the 8 speed is a great gearbox, saves the gearbox. Going with Jeep gets you a warranty replacement.

"Life" is open for discussion and definition. Going with ZF, the 8 speed is a great gearbox, saves the gearbox. Going with Jeep gets you a warranty replacement. By the way, it is still possible Jeep modified the gearbox in some way, most OEMs do.