I posted on another thread that already closed about just this thing. It's up to you.
Traditionally, the reason to always change during break in was to get out microparticles (and not-so-micro-particles) that remained in your motor from manufacture. It's the same reason most folks here still change every 3 or 4K. When the motor is made, there are little bits of stuff that wear the motor. draining the motor shortly after (1K or so) gets those particles out before they have a chance to do some damamge.
And as you run your motor through its life, more particles will appear. What neither the oil companies nor the car companies will tell you is that it's not just about how long the oil remains viscous and effective as a lubricant, but how much "stuff" is building up in the motor. The synthetics retain their lubricating qualities longer and in more extreme conditions (sometimes) than dino juice (regular). However, just as many particles are entering your motor. The car companies have made motors that do indeed "last longer," or have the potential to. However one must remember that is in their interest as far as marketing goes to have a car that lasts a long time, and doesnt need as much maintenance, at least on paper. Our mazdas are definitely capable of going well past 3k without a change (up to 7.5k, according to owner's manual), but I and many people on this site dont risk it.
You'll find that people who drive their cars into the ground, getting 150, 200, 250k miles out of a motor change religiously at 3k.
Just my 02, and remember that if it says it's cool on the manual, then maybe it is.
Either way I would recommend a break-in change. and go ahead and use a cheap dino like jhafti said. Then switch to good stuff.
