Never had a concern about chaning my own oil while under warranty. Come t think of it, I rather prefer t that way. I let the dealer change the oil in my 2007 Dodge Dakota, but only because he does it for free for life. Why would I pay for something the dealer included for free. Free washes too. But back to the Crossfire...I've only changed oil once....still haven't gone 10K miles on Two Harleys. I've been thinking of changing oil again just to get my head under the hood again.