Ran my 2.8L on eco +3 for 142 miles yesterday all highway.
The trucks dash reported back 36.4 mpg but hand calculated 36.6 which to date is the best mileage I've seen by a couple.
Used 3.88 gallons in the 142 miles but probably would not use it again because it really blows driving with that mode. When leaving the station I didn't think the truck would make it up to speed but once going it held 70 pretty well. Just don't attempt passing on the interstate too quickly.
8/14/2015 Ordered 2016 Canyon diesel CCSB, SLT, Copper/Red, black interior, Bose, spray in liner, transfer case shield, bars package and block heater.
Dealer received 2/3/2016
I received 2/5/2016