My daughter went on a trip. When she returned she found that she had gone 8,000 miles past the recommended service on her 2018 EX. It has 40,000 miles on it now. It has been serviced regularly at the Kia dealership up until now. Is there a warranty problem now if the engine fails. I checked the oil when she returned from the trip. It still at the full level and its darker than normal. She bought the life time oil change plan when buying the car new. I expressed my disappointment in her lack of responsibility.