Got an update. This is a GDI (gas direct injection) motor and sludge builds up behind the intake valves, breaks looks, gets into the cylinders, scores the walls, sludges up the oil, and the sludge blocking the oil passages makes the motors fail. There are class action lawsuits against Hyundai in more than one state on this. I had no idea this was a problem, and feel like shit selling the car to family members only to have it die on them a few months later. I offered them $1,500 towards a new used motor or to buy a new car.