"Especially if you have a generator, you'll run out very quickly. Diesel will last much longer than gasoline – easily a year, if you store it properly. And propane is the ultimate. It lasts pretty much forever if the container hasn't been punctured. Store it in a steel drum someplace where the temperature remains steady."
Mark Ruffalo's Good Life Formula
How Hollywood's greenest star found peace.
Plus: The New Whiskey Masters
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