You seem to have got much the same response as I did. What sort mileage have you covered in the last month?
Anyone know what the amount of oil is required between min and max on the dipstick?
I also have an 06 rev up engine and mine has used oil from day 1. How much is yours using? I get through about 0.5 of a litre per 1000 miles. Nissan have informed me that they work to a tolerance of up to 1 litre per 1000 miles.