I have always changed my new vehicles oil at 1000 mile to get the break in oil out and any metal shavings out. My wife was at the local dealer yesterday getting the windows tinted and asked the service adviser how much it would cost to change the oil at 1000 miles instead of waiting for the 7500 service. The service adviser told her Hyundai adds an additive to the oil at production and they want the oil/additive to stay in the engine til at least 5000 miles. So Hyundai does not recommend the first oil change till at least 5k. Has anybody heard this? Any truth to it? Thoughts? This is my first import vehicle so I don't know if they do things different than american auto makers. But was puzzled by the service adviser not wanted to sell a service.