I guess I'm looking just for the range of educated opinions of the
listmembers.

In a well-maintained Vanagon, how long does a stop have to be for it to be
better to stop the engine and later restart it, versus idling?

10 seconds, 1 minute, 5 minutes, etc?

I'm wondering about the theory of it, not the practical aspects as relate
to the needs of actually driving around other vehicles...

-Wes