Volvo Repair: No oil pressure, oil pressure, oil pan

Question
Hi I have a problem with my 2002 S60 2.0T automatic. It all started with a crack on the tank that holds the coolant next to the fan. This caused the car to overheat. There is a No oil pressure message showing. I added more more oil but the message is still there. And the engine isnt sounding as smooth (more like a diesel engine)

Answer
Watae, what happens on these is that the oil pump o-rings and pan need to be resealed causing the no pressure message.  Its possible that the oil pick up tube in the oil pan is clogges not allowing oil to come up.  This is definately a job for a  Volvo shop.  Roger