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The 85% limit in the ethanol content was set to reduce ethanol emissions at low temperatures and to avoid cold starting problems during cold weather, at temperatures lower than 11 °C (52 °F). [116] A further reduction in the ethanol content is used during the winter in regions where temperatures fall below 0 °C (32 °F) [ 117 ] and this ...
For each billion ethanol-equivalent gallons of fuel produced and combusted in the US, the combined climate-change and health costs are $469 million for gasoline, $472–952 million for corn ethanol depending on biorefinery heat source (natural gas, corn stover, or coal) and technology, but only $123–208 million for cellulosic ethanol ...
Ethanol also replaces toxic, air-polluting substances such as benzene, toluene, and xylene. Numerous states require certain ethanol blends to reduce air pollution. Ethanol produces about 34% less air pollution than gasoline on average. [32] As of 2016, ethanol blends in the U.S. reduce emissions of carbon dioxide by about 40 million tons per year.
Specially equipped vehicles designated as Flex Fuel capable can run on E85, a mix that's as high as 85% ethanol and just 15% gasoline. But, nearly all cars are already using a gasoline-ethanol mix.
It is very clear that by increasing the amount of water in fuel ethanol one can reduce corrosion. At 2% or 20,000 ppm water in the ethanol fuel the corrosion stopped. In line with the observations in Japan, hydrous ethanol is known to be less corrosive than anhydrous ethanol.
The engine powers the air conditioner on most cars, which means that running the AC burns fuel, reducing gas mileage by 1 to 4 mpg. And the hotter it is out there, the more energy your vehicle's ...
Therefore, searching for a new — to you — car with good gas mileage is a decision you probably won’t regret. As of early November, the average price of gas in the U.S. is $3.10 per gallon ...
The demand for ethanol produced from field corn was spurred by the discovery that methyl tertiary butyl ether (MTBE) was contaminating groundwater. [25] [28] MTBE's use as an oxygenate additive was widespread due to mandates in the Clean Air Act amendments of 1992 to reduce carbon monoxide emissions. MTBE in gasoline had been banned in almost ...