i just purchased a 99 limited and love it. The 4 wheel drive works exactly like it is supposed to and seems smooth. However i was checking underneeth and around the transfer case there is quite a bit of thick oil caked around it. It is pretty gooey and its caked around my fuel filter to. Not sure if this is normal from using 4wheel drive or not. Anyone else have this or any ideas what it could be. It doesn't seem to be leaking on my driveway at all. I suppose it could have been over lubed and when parts start spinning down there it sprays a little grease around. It seems to look like and wipe off like grease.