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Old 04-24-2015, 09:58 PM   #60 (permalink)
Cycle
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Quote:
Originally Posted by IamIan View Post
BTU/Mile already does .. it includes both the amount of fuel and the fuel's energy density ... thus making it superior to the less information from just using gallons , liters, etc.
How so? What volume of fuel that comprises a single BTU will drive the car for a specific distance? Especially considering that different engines will have different efficiencies, some throwing away more of those BTUs than other engines.

If we bought fuel by the BTU, his point would have more merit... but we buy our fuel by volume.

So it all comes back to volume... MPG.

As for "it's too small a difference"... what about "the amount of fuel per unit volume of air for propane is approximately twice that of gasoline just to reach that fuel's flammability range" and "propane has only ~73% of the energy content of gasoline on a per volume basis" yet "propane still exhibits a higher fuel efficiency than gasoline" don't you understand?

Last edited by Cycle; 04-24-2015 at 10:09 PM..
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