If you do change oil early I suggest you spend the $25 or so for a lab oil analysis. I changed mine at 2500 miles and alternate with the factory 15k so I end up with oil/filter every 7500 miles.
you'll get a report on the metals found, nitration and the viscosity of your used oil.
Blackstone and Oil Analyzers (Amsoil) both provide this service
here the report for my 550
http://f10.5post.com/forums/showthre...&highlight=oil