sorry I omitted that important information about ventilation:

Drivers side back window slid open about 1 inch, curtain closed.
Top left in the down and locked position (along with the important blankets
I couldn't find).

Not a well ventilated vanagon.  usually I open the top canvas window flap
corner about 6 inches as well.  Not this time---it was cold, man!
In a group of about 12 busses 5 were using Coleman cat. htrs and one fellow,
who shall go unnamed, was plugged into house currant.

And a thanks goes out to (Wisconsin)Jim & Patti Ellis for their hospitality,
and allowing me to camp my water cooled vanagon at Der Busbesitzer Gruppe
Global H.Q. in preparations of the 3rd annual  All VW Rendezvous, Swap &
Show Off event.

Chris C

----- Original Message -----
From: "Bob Stevens" <mtbiker62@hotmail.com>

> Did you have any ventilation going on during your morning running of the
> heater?
> Bob Stevens
>
>>
> ----- Original Message -----
> From: "Christensen" <populuxe@QWICS.COM>
> > > I used my Coleman cat heater last week.  I also had a professional
type,
> > small CO(carbon monoxide) detector.  Even so, I chickened out and turned
> > it
> > off after a half hour---  Went to bed late and had to get up early; did
> > not
> > want to risk the detector's alarm going off if it hit 35ppm CO and being
> > woke up at 4 am.
> >
> > In morning, turned on heater for 1 hour and then checked detector, was
at
> > 33
> > ppm.
>
>