Update:
I just came back from the dealer after 555 miles. They have confirmed that I am using 1/2 qt. Notes:
1. They did not give me assurance that it is normal.
2. They did not give me assurance that is not normal.
3. They said that they will escalate my case to the Manager.
4. They told me to come back after 700 miles.
5. Finally, they admitted that they do not have 'oil consumptions specifications' from the dealer.
I wish Nissan should just said, "The norm for the 3.7 engine is 1 qt/1000 miles."
Then we can put this 'unknown' to bed.
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