Thanks for the welcome, cfg83.
I've achieved this fuel economy with my Mustang without any eoc, p&g, or dwl. I use the cruise control most of the time at highway speeds. I try to anticipate stoplights, and I use the dfco feature to control my speed on downhills and for deceleration (I do a lot of downshifting to decelerate). It saves brakes AND fuel.
And I haven't managed to get through a tank of fuel yet without giving it 100% throttle and/or barking the tires on a 1-2 shift at least once.
Aging is inevitable; maturing is optional....