My Sisther has a 2011 Genesis Coupe 3.8 Track. Why on earth are you going 10K miles or more on OCI's on this car? Its a sports car? Do you drive it like Grandma or something? This is WWAAYY out of Hyundai's recommendations for this engine.
Dont get me wrong, just because you "Can" doesn't mean "You Should" in my book. If this was a Corolla or a civic, no problem. But a Sports Car? My guess you just dont drive it like one to even attempt this.
Are you using the M1 Gold Cap? or Extended Performance Oil? I sure hope so. haha.
In this car, I would do 5k oil change intervals and leave it at that, but thats just me.
Jeff