Just had my first oil change on my Sonata 2018 Limited at Dealership. A few days later I checked the dip stick in the morning when the engine was cold. The oil reads well past the full mark. See the attached picture. I drove back to the dealer and showed them the picture and then they took another reading. They said that it is normal for the oil to read above full and that once you start the car and start driving the reading goes down as the oil is dispersed throughout the engine. Sounds logical, but not sure and the reading did go down when he took the reading after I drove to the dealership just half a mile away. I always thought you were supposed to take a measurement when the engine was cold, but they said that when the engine is cold all the oil pools down so it will be above full. Does this sound right or are they just covering their asses?
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