[fastfredracing]

Even the straight 6 cylinder motors will blow up . I have seen a few. The piston skirt will break off, and either it makes the most god awful knocking noise, or the piece of skirt lodges in the counterweights, and locks the motor up. I have seen it both ways.
I have seen several times where the wiring connector to the cooling fan module overheated and made a bad connection causing the fan to intermittently stop working. The fan control module is behind the right front headlight. I always replace the module, and the wiring pigtail at the same time. They do blow head gaskets, and I have also seen a cracked head.
You can take all the tumblers out of the ignition switch except for maybe one or two, and you will never have the locked ignition issue again. ( mine left me stranded in North Carolina at the grocery store, and this is how I got myself home).
Good durable vehicles , but, you have to remember that it is a Chrysler product. They eat front rotors , rear axle seal leaks are common. It is your typical American SUV , but parts are cheap , easy to come by, and they are easy to work on.
I liked my last Jeep. It was great in the snow. Best fuel mileage I ever saw was 16 mpg.