Those are called "Regret Holes". They cause instant regret at paying $50K plus for a Jeep. They also serve to remind some of us old-timers that Jeep never fixed the rear main seal issue that has plagued Wranglers since at least the 90's. Yep, 30+ years of engineering evolution and this one still leaks. Jeep used to use a two piece rubber seal which inevitably leaked. The only upside it was relatively easy to change out once you dropped the bottom engine case oil pan. I haven't checked but I would bet they still use the same two piece seal to this day.What are these and should they be leaking a couple of drops? Thanks.
Jeep put the new Regret Holes onto the newer JL's so you can have a more convenient way to monitor your rear main seal leak. Used to be the rear main seal leak on older jeeps could be monitored by getting your flashlight and looking up at the gap between trans and engine. It would get all oily and gunky up there.
RMS never leaks a ton. Just a slow drip that sometimes never makes it onto ground.