Thank you very much for your comment but, for so long that you have had the other oil, it won't cause any damage to a thin?
I live the relatively cold weather (Toluca, State of Mexico, Mexico) and they told me that the weather would be 5w-30, in the manual it only says: SE or higher (For M / SET, GEN, AUST) SG / CD or higher (For CE); SAE grade number 75W-85W
What you are mentioning (SAE 75W-85W) is transmission oil. I have searched the manual and it only appears that it uses semi-synthetic oil and goes from 5w-40 to 10w-40. It is best to go for a Hyunday representative and find out for sure, as the oil is just adjusted, it must be changed every week, even if it is new it is changed to another.