I don’t know how I did it, but I got it! I clicked Start/Stop three times. I finally got car to say “Diagnostic Mode Entered”. I had this on the main screen under control messages in Car
I held down button (top of turn signal). It gave me this option. A few more clicks, it reset.
Usually when I held down it went to a menu that did not include oil. I read to use sum of last 5 VIN as code to enter mode but never got that far.