u/AdFew8833

I just bought this 2013 genesis coupe 2.0 automatic as a project car a couple weeks ago, haven’t driven it much as I was waiting to change the oil first I took it for a drive today after work and when I get home and I noticed the check engine light was on and I’m finding what looks to be oil in my coolant reservoir can I get any tips on where to check where it’s coming from or how it happened

edit: the car has 194k miles on it and the engine was replaced at 150k miles by the previous owner it still has the same transmission