I thought it was engine failure, wow was I wrong.......Hemi Tick. Exhaust manifold bolt broken, rear right side!!
Changed filter to have less pressure for oil pump (ph 10060) that didn't help. Marvel Mystery Oil didn't help either. So paid mechanic to fix it and it was complete
and My Rambo is back in service !!!!!!!!
I use Mobil ! faithfully and oil is always clean on changes.