So what's the deal with the "part time" 4WD systems such as the one in late 90s Cherokee? As far as I understand the 4WD option can only be used in snow, not on dry pavement. So what will happen, the transfer case will blow or something? I am not exactly understanding how such system is utilized. Also how does the reliability in the Cherokee compare to that of the Grand Cherokee? From all I've read the Grand Cherokee is horrible compared to the regular Cherokee. Keep in mind I am talking late 90s, maybe 97-99 models. I might be considering a beaters this year as I don't want to drive my M3 all year around and I am looking into cheap all weather options.