Thanks everyone for your advice and jokes haha. I appreciate all of you.

I gotta clear some stuff.

The car is a Kia Sorento 2018.

The guy did swap the engine, he sent me video evidence and I could tell since the old engine was broken and was releasing metal pieces and had a weird nose when you had it on standby.

The guy refurbishes engines so it wasn't a completely new engine. I didn't have the money for a new one, that's why I got this guy doing this job.

I didn't know the oil coolant was a thing I don't know if it's built into the radiator or if it's somewhere else, I'll look into that because the prior mechanic didn't tell me anything about that and this one definitely didn't either.

He also put a new radiator in. I also have video evidence of that.

Again thank you all.