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I had a unique opportunity today. My wife swapped a 20 lb tank last Sunday and we cooked one meal out of it. I ran our other tank dry with the flame weeder this morning and took it to have it filled.
I weighed the tank before I took it in and though the tare weight stamped on it is 16.5 lb it weighed 16.2. Tare weight on the exchange tank was listed at 18 lbs.
Cost to fill was $15. I got 20.4 pounds of fuel at a cost of .74/lb or $3.12/gal.
Cost to exchange was $19.95. I weighed the exchange tank and it had 15.5 lbs of fuel at a cost of 1.29/lb or $5.47/gal.
The propane place is right across the street from the exchange place. Exchange place is open 7 days a week, fill place is only open Mon-Fri. You pay a LOT for the convenience of exchange.
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