Is anyone running a 4.7L???

They are not a Chrysler engine. I am pretty sure they are Mercedes engine. I own a Jeep and talk to a lot of Jeep owners and I have heard so many bad stories of complete rebuilds and engine swaps due to blowing up these engines due oiling problems. You must must change oil more than what service schedule says and use a very good quality synthetic oil. I am with the others use a Gen 3 hemi.