Got 65k on my 2004 SRT 10. It idled at 90lbs up to 60k or so. Still idles at 100 when cold. 5w-30w Mobil one. All I ever used. When hot it now idles at 60lbs. Did have to go to braided stainless lines to the cooler. The mopar lines didnt last 25k. Go to VTCOA and check out their forums. All the engines run high oil pressure.