I'd prefer not to vent off the last of the propane. Just wasteful, is how I view that. I know of one propane fill that sells by the gallon.

One of the fellows I talked to today, says that some propane companies fill on the spot. I'd seen that done with 100 pound tanks and 100 gallon tanks. Not sure anyone will come out to fill eight 30 pounders. Have to make some calls and ask.
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Christopher A. Young
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"jamesgang" wrote in message ...

You don't need to vent it. The refiller will fill a partial tank. He'll still probably charge you for a full tank. Take it to a real propane store that sells it by the gallon in which case you pay for what you need.