On Nov 1, 2008, at 6:07 PM, Rob wrote: > I have a kerosene heater for backup heat. I'd used kerosene for heat > before and knew about the smell, I have 4 gallons of "odorless" > kerosene heater fuel in case it's needed. I tried it two winters back > and it worked well. What is the Btu equivalence with propane? How long does it keep without deterioration?