Also - I looked at the product spec. sheets for MB1 and RL and they don't seem like one is way worse than the other... I guess I can run MB1 for a for months and then try RL and see if there is a difference.
Mobil 1 Extended Performance
Red Line Synthetic Oil - Motor Oil - 5W30 Motor Oil
Also in the owners manual under “ENGINE OIL AND OIL FILTER RECOMMENDATION" it does not mention esters... But - I do see under the specifications where it does say it is "recommended".
http://www.nissanextendedwarranty.co...issan-370Z.pdf
Just looking for some advise - Not trying to argue about oils.