My 2007 GMC 1500 does about that. It seems to me that the new EPA gas has less btu equivalent than it used to especially with alcohol in it. Wonder what some of these new vehicles would do with some good ole leaded gas.
Cruise on over to the local airport, grab some 100LL, and let us know....
Yeah, the to n percent corn fuel doesn’t give the same amount of “go” as the non corn blends.
Here in NY we have no choice, everything is ten to fifteen percent ethanol.
Which reduces your range in winter.