Just got a 2020 with 3.8 50k. I will be running Valvoline Advance 0w20 or should I say was, however looking at history of truck it's had oil changes at quick change every 7500 to 8k. They did change it before I picked it up. Stick is clean so I don't see a problem. Would you just run Advance or Restore. They both are supposed to help with GDI however I can't find anything about keeping the valves clean.