mike-uswest wrote:
I also rode in the back of pickups when I was a kid, a very long time ago.
Mike
People say "I did X and I'm alive" like that makes it 100% safe.
I had a friend who fell from the back of a pickup going less than 5 mph. Hit his head, and died before they could get him to a hospital. Pete left a wife and two young kids.
As to the question at hand, I have used a catalytic heater--a Buddy heater with a low oxygen sensor and tip over protection--in my old, somewhat drafty popup and left the roof vent open, with good results. Would I use it in a more tightly sealed RV? Yes, but I'd leave a roof vent and a window cracked, and make sure my CO detector was working.