Heh I wish I had a heavy foot...6 speed, 3.42 gears, chevy performance intake, chevy borla rear dual exhaust, Diablo intune 87 octane tune. I've always seen everyone with magic milage and wondered how they got it. My dad has a 2018 2wd 5.3 stock and gets 18 average...I'd love to know the secret for those with a lift and big tires getting that.