I've had my jk for almost 1,000 miles and I recently was scrolling through my trip meters and found Eco, this is the first time I seen " Eco on" is this because I was in the green while viewing or can u turn it on and off? How does this effect my mpg? Should I be shifting in the green? Or should I be cursing in green? I guess I could also ask ,is it better to shift to neutral when stopping or stay in gear wind down a little?