George Chapman wrote:
>
> Volks:
>
> The vents that are aft (rearward) of the rear side-windows
>   suck the stale air> out of the vehicle.

George,

I do think so...........I believe you are describing cabin flow thru
ventilation. Flow thru venting is achieved through the inside of the
front doors. The small vent grill at the bottom-rear of both front doors
allows the cabin atmosphere to connnect to the air in the door cavities.
A series of holes on the leading edge of front door(inside the front
jam) create a siphon condition as the air rushes passed the doors. A
negative presssure is created inside the front doors and if the small
vents are slid to the open position, the stale air is pulled from the
cabin, thru the door cavities and released outside the vehicle.

I don't think there is any connection between the rear vents and the
interior of the vehicle. The rear vents seem to be "left over" from when
the Vanagon was air-cooled. They of course provide a cooling benefit for
the water-cooled models so Wolfsburg wisely left the vents when
air-cooled production ceased.

        JP