Oil change interval for synthetic oil

["Peter Schauss" <schauss@worldnet.att.net>]

The specs on my new car call for synthetic oil.  When
I start the car, the computer displays the mileage to the
next maintenance and tells me what maintenance is required.
Right now the number points to an oil change at about 15k miles,
presumably based on the way I have been driving the car.

Is this a realistic maintenance interval, or should I have the
oil changed sooner?

Thanks,
Peter Schauss