Coolant inside the engine oil

I would let the car sit for 24 hours, then drain the oil and change the filter, pretty much an oil change service. By letting it sit without running the engine you’re allowing the coolant to settle in the pan without churning it into a foam and making it harder to get it all out. There may be other ways to go about it but this is how I would do it. Hope this helps!

You're welcome!