>
> I still don't understand why anyone would want to waste  unmeasurable
> propane
> when driving, instead of using battery power that is  not used otherwise.
> It's inefficient, too, adds to your greenhouse gas  emissions instead of
> using a power source your van is creating  anyway.
>

Not true.

It is cheaper and greener to run the fridge on propane than on gasoline.

If the fridge is on battery power when driving, the alternator must work
harder to supply the power, thus burning more gasoline.  (Same idea as when
you have the air conditioner on).

Cheers

Alfred
85 Westy