On the highway, staying at 77 mph, the car has attained 36.8 mpg, using 91 octane no ethanol, Phillips 66. Other brands of gasoline, not as good. For a V6, that's rather well.
I started using Quantum Blue oil blended specifically for the VQ35DE engine, 7.5W27. After 7000 miles, Blackstone Labs analyzed the oil and all ppm were below averages wear set for 4800 miles!! For the TBN, they suggested I go to 9000 miles next time.
BND Automotive in Ohio.