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Maybe the question I should pose is does a motor require a given amount of fuel to provide a given amount of power? If it takes X amount of power to propel the car and X amount of power is proved by Y amount of fuel (with all other factors consistant), does heating it making it less dense help at all when you still need Y amount of fuel which is in the cooled fuel?
I am just trying to understand this, I am not arguing or challenging.
Brian
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