I am with SoulRaven on this one;<div>the little one pound tanks have lasted up to 2 weeks, cooking/creating kettle water twice a day.</div><div>Now my Coleman is run off a 20lb tank with a hose running into the vehicle, it runs my small propane heater, and Coleman Stove. The last tank lasted about 3 weeks now, as I did not need it for heating the vehicle overnight more than 5 times as it is getting warmer now.</div><div><br></div><div>edit; not true cooking, more heating up things or boiling water.</div>