Freewheel coasting with an automatic transmission.

[Fat Charlie]

One dark rainy morning I attempted to turn on a windshield wiper in an Army 5 ton truck. Blindly grabbing things on the dash of a military vehicle can turn out badly, and one of the things on that dash was a fuel cutoff. I coasted, but not all that far.

In the dark, in the field, nobody notices when the truck behind them isn't behind them any more- until they get where they're going and say "didn't we have a 5 ton when we left?"

[oil pan 4]

Originally Posted by ksa8907

The only way you might cause damage is by turning the engine off while coasting in neutral.

I have EOC my suburban for nearly 20 miles before and have done many 5 to 10 mile EOC runs.
I have a mechanical transmission temperature gauge and do not see any temperature increase or spikes when I restart.
But I know not every automatic transmission is a robust as the old THM700R4, which in its day was not known for being a tough transmission.