I have now had another look at my situation. From what I can see it has to be the oil cooler leaking. There is nothing else in that area it could be. That being said, fluid can take some irrational ways...
So, it looks like I have to pull the oil cooler and get it repaired. I understand it is possible without taking the engine out. I will investigate this before I dig into it.
So a few more (not so good) images. It is hard to get into the area but I have had my endoscope in there from below and from above. I definitely see moist around the bottom left part of the oil cooler.
On the images you see where it drips and wanders around the circumference of the heat exchanger. It also leaks when it is standing in the garage, so it doesn't have to be under pressure.
Would you check any other areas for leaks ending up on the lower nuts of the oil cooler?
I'm positive it's not leaking from the breather, oil pressure sender or oil thermostat.
Appreciate all of you trying to help me out.
//Jörgen
