
Originally Posted by
SKWrapper
[...]or run E85 you are polluting anyway (still 15% with E85 - debatable about the carbon dioxide from E85[...]
Gasoline has 31,000 calories per gallon
Ethanol has 20,224 calories per gallon
Ethanol is 1.55 times less fuel efficient ... meaning you need to burn 1.55 gallons of ethanol to go the same distance of 1 gallon of gasoline
( there is no magic engine that changes this ).
1 gallon of gas releases 19.6 pounds of C02
1.55 gallons of ethanol releases 19.68 pounds of C02
Edit: I had forgotten to mention - ethanol releases a LOT of C02 during fermentation
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