I changed mine at 3500 on my own. Ordered my parts from Idparts as they had OEM filters and Dexos 2 oil in stock. That stuff is tough to find in local parts shops. Cheaper than dealer too. Subsequent changes at 7500 and 15000.I'm at 6500 miles and i'm showing 14% oil life remaining, I will wait until the service light comes on, before scheduling service for my first of 2 free maintenance appointments. For those with more miles driven, how many miles prior to your first service?