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Old 09-06-2010, 11:52 AM   #34 (permalink)
Piwoslaw
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Join Date: Oct 2008
Location: Warsaw, Poland
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Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
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Quote:
Originally Posted by Duffman View Post
These numbers are available if you look for them. If I remember correctly, 80% of the energy in the well makes it to the fuel tank for gasoline and 84% for diesel. This was a few years ago so I could be remembering wrong or it may have changed. I have never found anything for coal but then again I haven't looked either.
I remember reading that harvesting tar sands is much more expensive, energy-wise. Something like 90% of the extracted oil going back into the process. And that's before refining it into fuels.
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