Had to take a 423 mile trip today. I filled up the tank and drove nonstop 6 hours and 35 minutes. According to the dash, I got 31 mpg. On a previous trip, I was only able to get about 25 mpg.
The only changes I made was I started using 93 octane and I drained and filled my CVT with Valvoline CVT fluid. On a previous trip, I also ran into CVT overheating issues and limp mode, which still allowed me to do 70 mph, but no faster than that. The fluid change seems to have fixed it.
I didn't run into any issues this time driving for over 6 hours straight. I also drove with traction off the whole trip. I also used cruise control for the whole trip.
The engine was at 2000 rpm at 70 mph, the mpg got worse over 70 mph.
I'm a big fan of the CVT, O/D off equals fun on twistie back roads. L gear is fun in the twistie also. Later Rogue models call L gear Ds(Drive sport)