anyone else nervous about 8,000 mile oil change intervals? that's what the owner's manual recommends now, not 3,000 miles like it used to be. it's my job to make my customers feel secure about those kind of things, but as an owner, i must admit it makes me a little nervous. change oil light came on at 3,500 miles, which i expected. it's been about 4,500 miles since then, no light. i switched it to synthetic from the get-go to help. just wanted to get the thoughts of the other 2011 owners.