Hi i have Santa fe 2020 2.0 T. 39000kms. Recently i have noticed that engine noise while accelerating is higher than usual and and also heavier when accelerating. Also when the car is in stop mode at D , can feel slight vibrations when put in N the vibrations go away. I have been using Costcos 87 grade gas. I bought the car at 35k and so far not a single oil change under my supervision. But recently the engine has started sounding like diesel kinda and acceleration is not smooth. I am planning to take it to the dealership at around 41000k for oil change and would definitely discuss it with them but for the time being is there anything recommended to bring down the noise and specially the engine sound is horribly loud when cold starting at around -7 to -10 degrees Celsius. The car is parked in open air parking all night.