
Originally Posted by
87 Turbo II
the dragging will just scrub off speed, but if you coasting down to a stop sign or light, then you were going to be stopped anyway, but if the hill continues upward after it is at the lowest level, then the shed speed may cause you to burn more fuel on the way up, but depending on the grade of the downward hill, you're probably getting better fuel cut from decel than the drag from speed preservation. There are always a million "if"s and loopholes FOR MPG.