This argument has gone on for years, but the specifics change.
It used to be RV'ers liked to idle their diesel "because the big trucks do it, and it makes me feel cool to act like a big truck".
Now the argument has shifted to "my diesel is so complicated I have to idle it even more, in a complicated way, and that it's still cool to act like a big truck".
Why not place at least a little faith in the engine and coach builders to set these things up properly. Turn the darn thing on when you need to, get in and drive it, and shut it down when you're done.
