Thanks for all the responses. After checking my records, I found that the dealer did an oil change @ 111,000 as part of the 100,000 mile service. So, I put 7,600 miles on a non-synthetic. ouch.
Here are my official records:
3/14/2004 95352 5W-30 dino
5/22/2004 99280 10W-30 Synthetic
11/27/2004...