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In the United States and Canada, octane ratings are in AKI, commonly shown as "(R+M)/2". 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.
Coleman fuel is used primarily for fueling lanterns and camp stoves. It is usually sold in one-gallon cans in the United States; [3] in Europe it is usually sold in one-litre bottles. [4] Originally, it was simply casing-head gas or drip gas, which has similar properties. Drip gas was sold commercially at gas stations and hardware stores in ...
The more versatile hatchback, meanwhile, returns an EPA combined rating of up to 35 mpg, while sedans with the base 2.0-liter engine net a combined fuel economy rating of 33 mpg. Base price ...
The amount of carbon dioxide emitted per liter or gallon burned varies by fuel type, since each type of fuel contains a different amount of carbon per gallon or liter. The ratings reflect carbon dioxide (CO 2), nitrous oxide (N 2 O) and methane (CH 4) emissions, weighted to reflect each gas's relative contribution to the greenhouse effect.
One is referred to as the "aviation lean" rating, which for ratings up to 100 is the same as the MON of the fuel. [12] The second is the "aviation rich" rating and corresponds to the octane rating of a test engine under forced induction operation common in high-performance and military piston aircraft.
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.
The harmonic mean captures the fuel economy of driving each car in the fleet for the same number of miles, while the arithmetic mean captures the fuel economy of driving each car using the same amount of gas (i.e., the 13 mpg vehicle would travel 13 miles (21 km) with one gallon while the 100 mpg vehicle would travel 100 miles).
As of 2017, there were more than 21 million E85 flex-fuel vehicles in the United States, [1] up from about 11 million flex-fuel cars and light trucks in operation as of early 2013. [20] [21] The number of flex-fuel vehicles on U.S roads increased from 1.4 million in 2001, to 4.1 million in 2005, and rose to 7.3 million in 2008. [3] [19]