Some kind of Oil mixed in the Coolant tank....any idea?

[coco]

My oil cooler was leaking coolant about a month ago.
The dealership did a pressure test on the coolant system and the oil cooler tube was cracked and there was a hole in the radiator.

Start with the cheapest first... do a pressure test on the coolant system...

Thanks Ben,

I will talk to my mechanic about it next week after long weekend will be over.
So in your case, you replaced radiator and oil cooler tube?
No coolant got into your motor?

Best regards,
Coco