OK so this is the 2.4L I-4 in the Wrangler in signature. Did a short interval (yes, it's a waste of Amsoil SS but wanted apples to apples from the last UOA) to check on the trend.
A little history: Had to run this Jeep on 3 cylinders once for around 200 miles when the electronic distributor failed on #4; at the same time had the head gasket failing and both were replaced around 168k. Prior to that as you can see the wear metals were very low, but they've jumped up since. I'm thinking that #4 is suffering a bit.
It still runs fine but is noisy at startup (was not noisy prior to 190k or so) for about a minute until it warms up.
edit: Forgot to mention that the only difference between the pre- and post- head gasket is that it was SS 5w30 prior and is now 0w30. Current fill is 5w30 and will sample again this fall.
I know what my opinion is - but would like to hear from those who know more than I.