Hi honda2nissan -
First: I also got your message about having to log in each time you want to post. When you see the log in form, there is a checkbox that says "keep me logged in". Make sure it's checked before you submit the form.
Next: I think you've done the right thing by bringing the oil consumption to the attention of the service manager. (I would MAKE SURE your concern is noted on your work order so that you have proof the issue was raised at the dealership in the event this becomes a warranty dispute later on.)
My sister faced an oil consumption issue with her Toyota Camry, and the dealership asked her to bring the car back after a certain number of kilometers after they'd done an oil change. In her case they ultimately said the amount of oil used in that distance was "normal", so she got no help. Twice she's nearly run the engine out of oil since then because it uses so much.
Hopefully your case isn't as severe. Please keep us posted.
View my fuel log 2015 Micra S manual: 5.0 L/100 km ... 56.5 mpg (Imp) ... 20.0 km/L ... 47.0 mpg (US) ...