by DantesPeak » Sat 19 May 2007, 11:29:02
$this->bbcode_second_pass_quote('shortonoil', '[')b]DantesPeak said:
$this->bbcode_second_pass_quote('', 'T')his probably has much to do with the less energy content in ethanol as compared to RBOB gasoline, and is a symptom of the bigger picture of declining EROEI. The conclusion is especially true if actual miles driven have declined.
The fact that ethanol only has .667 of the energy content, per liter as gasoline, is only one of the problems with our new grades of gasoline. Most cars on the road today, where built to use the old MTBE additives, and their valve timing and compression ratios were designed to best utilize those mixtures. Adding ethanol not only reduced the energy per gallon of gasoline, it reduced the operating efficiencies of most engines. On my car, my fuel economy has dropped about 4% during the last year. Other people are also telling me that their gas mileage has recently declined significantly.
Americans are driving less; it is just that it takes a lot more fuel to go a mile than it did a few years ago. I find it hard to believe that ethanol has added one BTU to our energy supply; in all likely hood it is probably reducing it. When they sold the ethanol scam to congress, I seriously doubt that anyone mentioned that it would reduce the efficiency of the auto engine, and that we probably wouldn’t have the refinery capacity to make up the difference.
Congress has the same problem that the general public has, if they can think of a situation, then “
they” will magically make it happen for them. Americans are going to have a real problem when they realize that reality is not state that can be dictated for the fulfillment of their whims and desires.
To the best of my knowledge, the conversion to ethanol acrross the US is only about 60% implemented. Therefore we could look forward to continued fuel efficiency declines over the next six months. This may result in demand growth while fuel prices keep
rising.