Oil light flicker

I asked about very low oil pressure over on BBD, it was suggested to run Lucas oil treatment (3 qts, with the rest being good oil). I'm dealing with a 130K mile 440 that runs so good, I can't see taking it apart. No noises, but low pressure once it warms up. I'd say you have worn out bearings, and don't go on long trips
without your AAA card.
Mike