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Old 04-23-2015, 02:25 PM   #51 (permalink)
EcoModding Lurker
Join Date: Mar 2015
Location: California
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You have to look at energy content of the fuel. Propane has only ~73% of the energy content of gasoline. That an engine still gets 5% better fuel economy on propane than gasoline should stand as testament to fuel vaporization.

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