I didn't tell them anything. This is what Hyundai recommended and Hyundai is the one paying for any repair service. I also bought the extended bumper-to-bumper warranty which covers everything for 10yrs/100K miles with 0 deductible. So as long as I change oil as recommended by the manufacturer, the dealer has a no choice but to repair any engine failure. In the US, consumer right laws are biased towards the consumer. I have challenged many dealers in denying repair claims and has never lost a single case.Even at 7500mi at 50% ICE usage there shouldn't be much debris after the first oil change.
What did the dealer say about you going past the 5000mi recommendation? This is the battle we're fighting in Canada. Hyundai wants us to change oil at 6000km regardless of ICE usage, with the threat of voiding warranty if not followed.
The point isn't about convenience, it's about dumping perfectly good oil unecessarily, which costs us more money and has a negative impact on the environment.
BTW 0W20 oil can only be made using synthetic of some sort so don't let them dupe you into thinking mineral 0W20 is an option.