[elhigh]

I've been turning my engine off at stoplights in my truck for decades - literally decades. And now with the truck entering its 27th year, it's on its third starter. You might wear the starter a little faster than otherwise, but averaging nine years on one isn't bad either. And my truck's mileage is fantastic.

I would recommend shifting to neutral for coasts rather than coasting in gear. You would need to do some math to figure out where the break is, but I think the greater glide in neutral will more than offset the zero fuel use of the shorter glide with the tranny driving the engine. An engine control system will usually reduce the fuel feed to the engine in such a state to zero, but the engine drag pulls the vehicle speed down too quickly. The engine doesn't pull much gas just to idle, so the longer glide can deliver better results. Again: testing and math to know where the better results lie.