coolant can show up in the oil by 3 paths.

1 is the coolant/oil heat exchanger which this car wont have as its US specced. The Euro spec ones had it with tow package.

2 - the headgasket sealing properties have breached due to some past event.

3 - someone accidently poured coolant into the oil fill hole.

First order would be to test cooling system integrity with a pressure tester.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)