Yes it was fixed then (sorry about my wording) - what I meant to say was the prob started about 60 miles after the oil change (where they put 1 qt more oil). Roughly 60 miles after draining the prob went away - this is what I was trying to say.
Then this week my car was without battery for a day. With the new battery, the Oil Pressure warning light started flickering rapidly (very solid this time).
I assumed that it got reset with the batt out - while driving for about 4 miles, flickering stopped and became had faint red light. Then it seemed to have faded too.