If you're cruising mostly at highway speeds you'll likely have few issues. Drive it hard once in awhile to keep the carbon deposits down, and you should be just fine. I would also recommend a shorter oil service (even if you have free changes from dealer). 4-5k between would be optimal using a quality synthetic oil like Amsoil or Pennzoil Ultra Platinum. With the hot V of the N63, engines Temps are high and you'll have much better protection with a shorter oil service.
The N63TU is a great motor and can handle quite a lot of abuse. It's essentially the same motor as the M5/M8/X5M (S63) without all the M cooling and turbos, etc.
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