Well if Hyundai call for API GL-5 75W-90 and its written API GL-5 75W90 on the bottle, what could go wrong?
I put exactly this Royal Purple oil 100 000km ago in my 2013 and I just replaced it again recently at 160 000km. The old oil still had the purple color..
FYI, it will be way easier if you have a hand pump that you put on the bottle, there is no space to tilt the bottle in the filler hole.
I use something like this : [ame]https://www.amazon.ca/Plews-55-001-4cc-Bottle-Pump/dp/B000BQW5LK/ref=sr_1_3?ie=UTF8&qid=1539016725&sr=8-3&keywords=oil+hand+pump[/ame]