The 2007 Sedona in my signature is pushing 200K miles and has developed a slight oil leak . The majority of this vehicles life has been with 5W20 synthetic SM rated oil and for the last 60K miles or so I bumped up to 5W30 synthetic SM rated oil (6K mile OCI's). My question is I believe it may be time to switch to a HM synthetic 5W30 (using the same OCI's + Fram Ultra filter) , so what do you look for in a HM synthetic 5W30 oil when comparing between brands ? SM Plus rated ? Some other rating ? ... M1 5W30 HM and PP5W30 HM oils are currently on rollback where I live at WM and then there is also Valvoline HM Synthetic for a few dollars more per 5 qrt jug. Thanks in advance !