I drove my NISMO under 5k RPMs until after the first scheduled oil change (3750). I try to get on it as much as possible now without exceeding the speed limit, as red Zs (especially NISMOs) attract a lot of unwanted attention.
BTW, the dealership told me that there was no need to break in the new Zs. He told me to drive it like I would normally drive it so that it would learn my driving habits and react predictibly in the long run. Not sure how much truth there is to that, but the gentlemen I spoke with were "certified" Z technicians and mechanics respectively (Bates Nissan only has one of each).
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 2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL
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