and once again no one online can tell u where or what is leaking ONLINE if u want to know what is leaking have some one near u look at it as for the oil pressure switch yes it can leak if the 2 are related can u hear a tree fall in the forest if U are not around?

Mine was doing it (after I replaced the bulb that the PO had removed) after the engine was good & hot and idling.
I had just changed the oil about the time I fixed the light.
After a recent 400 mile road trip, it has stopped flickering.

I had changed the oil to a group IV synthetic. Wonder if that has made the difference. This oil is turning darker (not black) faster than I thought it might have - so I'm thinking that it is doing some cleaning up inside the engine.

The car only has only about 48K miles (78K KM) on it - original.