I am not worried about digging in to it right now, the only time I really notice it is when I start it up early in the morning when it is still cold, it makes some noise and quickly goes away as the oil pressure comes up and is gone when the temp is at up at operating temp.

With a around 140,000 miles on it, I am not worried about the oil ruining my cats, I am sure they are whipped as they are now. From the resonator back the exhaust is pretty well rusted and is in need of some work aswell.

I want to say the oil I have on hand is ROTELLA T 15W-40. I dont remember at the moment.

I have considered trading it on a new Jeep JK or even an SWB Hemi Ram. But I cant come to part with my WJ.