I just talked to the Porsche service at the dealer and they were unable to locate the source of the intermix of coolant and oil. They had taken the engine out of the car and looked at all the areas that Porsche technical in Germany had directed. Apparently because they are unable to locate the precise problem, they are going to replace my engine. This is the best possible outcome because I would have always worried about the integrity of my original engine. My faith in Porsche is restored and I think they did the right thing. I have no complaint at this point...I should be able to pick the car up on next Monday.