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Before higher level blends of ethanol were finally legalized, only county, state, and Federal fleet vehicles could purchase E85 in Florida - from only 3 pumps in the state. Several other states have similar laws that prevent the sale of E85 to the general public.
Typical label at the gas pumps warning drivers of ethanol content up to 10%, used as oxygenate additive instead of MTBE. Miami, Florida. In 1826 Samuel Morey experimented with an internal combustion chemical mixture that used ethanol (combined with turpentine and ambient air then vaporized) as fuel.
All states require gas pumps to be labeled with the correct octane level and nearly all states do regular testing to make sure gas stations are in compliance. A minimum 82 octane fuel is recommended for most vehicles produced since 1984. Older cars with carburetors could operate with lower octane fuel at higher elevations. Regardless of ...
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Both alcohols have a high octane rating, with ethanol at 109 RON (Research Octane Number), 90 MON (Motor Octane Number), (which equates to 99.5 AKI) and methanol at 109 RON, 89 MON (which equates to 99 AKI). [2] Note that AKI refers to 'Anti-Knock Index' which averages the RON and MON ratings (RON+MON)/2, and is used on U.S. gas station pumps ...
Fuel additives in the United States are regulated under section 211 of the Clean Air Act (as amended in January 1995). The Environmental Protection Agency (EPA) requires the registration of all fuel additives which are commercially distributed for use in highway motor vehicles in the United States, [8] and may require testing and ban harmful additives.
Some of the nation's largest truck makers on Thursday pledged to stop selling new gas-powered vehicles in California by the middle of the next decade, part of an agreement with state regulators ...
[116] (3) CARB estimate for Midwest corn ethanol. California's gasoline carbon intensity is 95.86 blended with 10% ethanol. [117] [118] (4) Assuming direct land use change. [120] (5) If diesel-powered vehicles are included and due to ethanol's lower energy content by volume, bioethanol represented 16.9% of the road sector energy consumption in ...