The cost of that nitrogen and everything else needed to grow that corn was figured in to Gary"s equation, the 273 gallon gain was net gain after all costs. 273 x 77000 btus per gallon equals 21,021,000 btu net gain per acre from the sun very significant I would think. Just Google ethanol btu and read some of them. The first one claims ethanol is inefficient says it takes 140 gallons of fossil fuel to grow one acre of corn, not very much would be grown if that were true. He also claims it take 11 acres to fuel one vehicle that would be enough to go 100,000 miles on straight ethanol at 20 mpg or 1,000,000 miles at 90/10 blend. Another hit on Google shows several different studies showing it as efficient. 34% energy gain with only 17% of the energy being used coming from fossil fuels. Another said 6.34 btu gained from every one btu used. These were on a journeytoforever.org website and looked to be legit. Lee
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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