I change my oil every 4-5 months which is about 4000-4500 miles. That works out to once before winter, once after winter, and once sometime during the summer.
However the best advice has already been given. Get on oil analysis after your second change (NOT the 1st synth fill) at make your own interval. Make sure your first synth fill is a normal interval beacuse it can clean out the build up of conventional oil deposits.
For example the wife's car goes the same 4-5 months but that is 8-10k miles. Both oils analyze close after the same time period but significantly diferent miles and types of driving.
