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Many fuel stations now offer an 88-octane fuel blend that is 15% ethanol, suitable for use in some gasoline-powered automobiles from model year 2001 and newer. Indiana: 87 89 93 Iowa: 87 89 91 Many stations will offer "Super Unleaded" 87 that contains 10% ethanol and a more expensive "Unleaded" 87 with no ethanol. 93 is available at select Kum ...
"Regular" unleaded fuel is 95 RON; "Premium" fuel is rated at 97 RON (Shell's V-Power Racing is rated minimum 97 RON). Petron sells 100 RON in selected outlets. [70] Mexico: The standard octane index is 87 AKI for regular fuel and anywhere from 91 to 93 AKI for premium fuel, although 91 AKI is the most common octane number for premium fuel.
The fuel-characteristics of a particular gasoline-blend, which will resist igniting too early are measured as the octane rating of the fuel blend. Gasoline blends with stable octane ratings are produced in several fuel-grades for various types of motors. A low octane rated fuel may cause engine knocking and reduced efficiency in reciprocating ...
At the time of writing, the national average price of regular gas is $3.62 per gallon, $0.02 higher than this time last year. Drivers who use premium gas are paying $0.07 more this year than last ...
Unlike most stations in the plains states which carry ethanol-free 87 octane unleaded alongside 10% ethanol 87 octane unleaded, many states carry ethanol-free gasoline specifically marketed as recreational fuel designed for marine equipment and small engines. Pump grades at the Brighton, MI Sunoco, including Rec-90 ethanol-free 100% gasoline.
Octane is a component of gasoline and petroleum. Under standard temperature and pressure, octane is an odorless, colorless liquid. Like other short-chained alkanes with a low molecular weight, it is volatile, flammable, and toxic. Octane is 1.2 to 2 times more toxic than heptane. [5]
By 1936, tests at Wright Field using the new, cheaper alternatives to pure octane proved the value of 100 octane fuel, and both Shell and Standard Oil would win the contract to supply test quantities for the Army. By 1938, the price was down to $0.046 per liter ($0.175/U.S. gal), only $0.0066 ($0.025) more than 87 octane fuel.
This process renders the fuel-grade ethanol undrinkable. It is then transferred to a blender, which will add this E98 to conventional gasoline to make common 87 octane fuels (E10). It can also be added to ethanol in higher volumetric concentrations to produce high-level blends of ethanol, such as E85.