Glad to see you have a Durametric, now you can really get into troubleshooting the vehicle. I would clear the alarms and see if they come back in a few days, maybe you triggered them when you opened your oil fill cap doing the AOS test?
I've had those same alarms... They went away after I replaced my AOS (it was definitely bad) and then replaced all my O2 sensors (damaged from driving with a bad AOS too long).
I would take Topless suggestion of adding Techron additive to the fuel tank and taking it for a brisk drive.
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Jäger
300K Mile Club
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