Using DFCO to increase your MPG

[churp]

I've been shifting my auto into neutral and coasting and don't see a problem...anything under 55 slides back into gear nicely without giving it gas.

Older cars I know had a problem when moving without the engine rotating, due to no oil pumping without the converter going. Without oil circulating in the tranny while moving---lots of problems. Think they have cured this since front wheel drive, but don't know for certain. If the owners manual says no towing of an automatic without a dolly or trailer, this is the reason. Just to be sure I won't FAS with my automatic.

edit: Shutting the engine down with standard tranny no problem if you're comfortable/brave.... I'll coast with engine running w/automatic though!