I noticed I was down on coolant before making 180 mile round trip last week but everything appeared ok. On the way home from a cruise the other night I was driving a little aggressive down a long back road. I noticed I was leaving a trail of smoke in the rear view mirror (and it wasn't tire smoke LOL) I pulled in to the garage opened the hood and noticed both valve cover breathers were puffing oily smoke. Drained the oil which was kind of clumpy and thick (10-30) Pulled the valve covers and found the chocolate milk looking sludge on the inside of the valve covers. It's definitely weird because in 40 + years of running Mopars I've never blown a head gasket before (I didn't build this engine) We'll see how they look when I pull the heads.