I did the first one at 1500 miles at the dealer, they just had to put another filter on and clean up the engine undersides about 2 weeks later. The other morning after coming in from a road trip I noticed a small pool of fresh clean oil and they said it had dropped down about a half a quart because the filter had loosened up. I probably should have just done that first one myself. Check your service contract/extended warranty, if you bought one. Mine says the oil and filter has to be changed every 6K miles to comply with the extended warranty. Oh well, no harm, no foul, just a spot on the parking spot, kinda like having a Harley...[cool]