I looked all through the forums for this subject. I will ask my dealer this question too when I pick up my C next week. Maybe I am still too old school but on the few new cars I have bought, I would change the oil at something like 1000 miles the first time just to get rid of any shavings or contaminates. In today's engines though, maybe the factory fill has break-in additives or something similar to help the new engine. Maybe just an early filter change is needed...or nothing 'til 10k? But then, the Toyota manual doesn't mention anything about early first oil changes, and I bet they know what is best for the engine after all. What did you guys do on your C's, early or wait it out?