Quote:
Originally Posted by Bristecom
- Leave it in gear when cruising off throttle. Only take it out of gear when you need to (to prevent stalling). There is no advantage to taking it out of gear when moving and you'd be doing more harm than good.
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I usually cruise in gear too, I use the highest possible gear without stalling because the higher the engine speed, the faster it will bleed off your momentum. Cruising in gear allows the momentum of the car carry the engine and during that time the engine doe not use any fuel, good for fuel economy.
There is also nothing wrong with cruising in neutral. While cruising in neutral, your engine goes back to idle speed around 600rpm just using sips of fuel to maintain it at idle as if you were stopped at a light. But since the wheels are no longer driving the engine, it can coast for 2-3 times the distance. It is useful if you are carrying a lot of speed but sees a red light a block away and you know from experience that coasting in gear won't get you to the next light.