Is this from the oil pressure control solenoid? Assuming it's bad, is it safe to drive temporarily?

 

Is this related to your post yesterday asking about rebuilding a 2nd gen 5.0 with a 1st gen block, and adapting the oil pressure control solenoid?
I think we're going to need a whole lot more explaining before anyone can help you.

Generally, for anything oil pressure related, I would not f*** around.

 

It is related. Haven't gotten any answers yet!!!