Using DFCO to increase your MPG

[voodoo22]

Originally Posted by Bullet120

DFCO down hill, gain some speed, use no fuel at all.

Neutral down hill, with car on, gain a little more speed and burn fuel otherwise not burned.

Hmm, no fuel, or some fuel. Which sounds more efficient?

Not to mention neutral coasting and autos don't like each other. However, ICE off neutral coasting in a MT is very efficient.

Like Sodium Duck says, it's a combination of techniques based on your situation. In situations where you don't want to slow down, but the decline is not steep enough to allow you to use DFCO without losing speed. That's when you want to use N.

You are also wrong about coasting in N in an auto. Most newer autos have no problems and incur no damage from doing this. You don't need to rev match or anything.

It really doesn't matter how efficient a maneuver is with a MT when you're driving an AT. Most AT's cannot ICE off coast without incurring damage, but some can. For the masses who can't N-ICE on coasting is their best choice when DFCO isn't suitable.