Oil light flicker

I bought a gallon of oil treatment (Lucas), and screwed around yesterday trying to get 3 qts of it into my 440. That stuff is like honey!. I topped it off with 20-50. Now I have 40 PSI at idle, and more at speed. I'll post again when I get a chance to get it good and warmed up. In my case, I've already got a mech gauge, so it's definately work bearings. Check yours with the mech gauge first, just to be sure. Good luck.
Mike