I have a 99- 996, my oil pressure fluctuates going around curves( not at really high speed) drops in between 3 and 4.
When the car is cold it sits at 5 until warm. Idles around 2.
Oil sending unit replaced, oil pump replaced and oil changed.
Sometimes at higher steady speeds it will fluctuate between , slighly above 4 and slighly below 4 rapidly.
Car runs and sounds great.

Any thoughts. Dealer said Porsche recommends replacing engine.