Valkryderguy has the right idea changing the oil at 5,000 miles. I will probably change my oil myself somewhere between 5,000 and 7,000 miles unless my fss tells me different. Years ago before detergent oils came on the market you had to change oil more often because the oil didn't have the ability to trap and suspend the contaminents. Also, those older engines had more "blow by" past the piston rings and into the oil. Oil change intervals were only 1,000 miles. With todays oils and especially the synthetics like we should be using in our Crossfires and the fact that we have 8.5 quarts in our engines instead of the 5 quarts for conventional cars you can go much, much, longer between changes.

If you like to change the oil more often it certainly won't hurt anything. The real life article you can click below is one that I refer to often. It takes a look at additives also.

http://www.xs11.com/stories/croil96.htm