I have a 13 Eco and it has over 97,000 miles on it now. Owned since new. I tow a #7000 TT with it and average between 9-10 mpgs towing it over the pass on I-90 East.
Yes, has more power than you think a little 3.5L engine should have, but that's the "boost" part of it..
I can get 20 mpg running empty on the hwy at 65 mph all day long.
I get 17-18 mpg on my daily commute to work. It's an 18 mile run from driveway to the parking lot.
I have found the trick to towing with these Eco's is to let them rev and not bog them..
The more you bog them the MORE boost you are using and thus, running hotter and burning more fuel.
I have the six speed and 3.73 gears and running the flats, it likes 5th gear and between 2k and 2.5k rpms. That keeps the boost low to nothing.
When I try to run in 6th, the rpms are lower, but the boost is always in the 5+ psi range.
I monitor my actual temps with a ODBII monitor and an app on my phone.
Anyway, need more info to help you out any more.
Mitch
