These motors do have a tendency to burn a little oil. The term "little" can range from dealer to dealer on what's acceptable and what isn't. I do know with the VVEL system, the high compression, and the fact the oil is susceptible to higher temps, it can cause the motor to burn oil.. At least at a small/tiny rate.
Obviously if you're heavy footed, running from stop light to stop light, you may notice more oil being burned than when you're doing most of your driving on the highway.
Also, make sure you're checking the oil in the morning (or after the car has sat for a while) and on a flat surface. An uneven driveway can throw numbers off. If you check it 15 - 20 minutes after, it doesn't give enough time for gravity to take its course and feed it back down to the oil pan which could give you an inaccurate test.
With that being said, a quart is a good amount of oil to burn in just over 1,000 miles.
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'08 Infiniti G37s - Forced Induction Fed
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