I ended up taking a lot of people's here advice and just looked in my manual for service. I ended up doing oil change, cabin air filter (I know it's super easy, next time I'm doing it myself), tire rotation and front tire balance. the biggest hiccup that I ran into was I wanted to get my front and rear differential fluid changed and I ran into a wall with the dealership. for whatever reason they said that there wasn't even access to change the front differential which really scared me because it's a Kia dealership. then again they do share their service with Honda so I gave them the benefit of the doubt, I've never had any bad experience with the work they've done but I have not been impressed with the knowledge of the products they are supposedly experts on. In addition to not knowing where the fill plug was for the stinger, which is located on the front of the block facing the bumper, (which is not an excuse because they should have repair manuals telling exactly where and how to do everything) they said that the service interval was 65,000 miles OR if it had been submerged in water. I just rolled $36,000 mi so I'm going to address that issue later, I'm not hard on the car so I'm sure the differentials are fine. They were also unclear on whether or not the all-wheel drive had limited slip in the back. I know that the rear wheel drive GT2 has an LSD (Limited Slip Differential) and the way that they came to the conclusion that the all-wheel drive version does not have an LSD (Limited Slip Differential) is that they did a part search for it for my VIN and nothing came up. if anybody can confirm or deny that the all-wheel drive version GT2 has limited slip differential in the rear, that would be good info to have.