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Octane isomers such as n-octane and 2,3,3-trimethylpentane have an octane rating of -20 and 106.1, respectively (RON measurement). [89] The large differences between the octane ratings for the isomers show that the compound octane itself is clearly not the only factor that determines octane ratings, especially for commercial fuels consist of a ...
89 93 Alaska: 87 88.5 90 Arizona: 87 89 91 Arkansas: 87 89 91/93 Northwest Arkansas primarily sells 87/89/91 octane. 93 octane is available at select Kum & Go's in the Northwest and Central regions of the state. California: 87 89 91 Colorado: 85 87 91 Connecticut: 87 89 93 86 octane may be sold if labeled as economy [1] Delaware: 87 89 93 ...
A low octane rated fuel may cause engine knocking and reduced efficiency in reciprocating engines. Tetraethyl lead was once widely used to increase the octane rating but is not used in modern automotive gasoline due to the health hazard. Aviation, off-road motor vehicles, and racing car motors still use leaded gasolines. [2] [3]
By 1937, the Army established 100-octane as the standard fuel for combat aircraft and by 1939 production was only 20,000 barrels (3,200 m 3; 110,000 cu ft) a day. In effect, the U.S. military was the only market for 100-octane aviation gasoline and as war broke out in Europe this created a supply problem that persisted throughout the duration.
E15 is a higher octane fuel, it is currently available in 29 states at retail fueling stations. E15 was approved for use in model year 2001 and newer cars, light-duty trucks, medium-duty passenger vehicles (SUVs), and all flex-fuel vehicles (FFVs) by the U.S. Environmental Protection Agency (EPA) in 2012. [citation needed]
This is why the Merlin-engine P-51 Mustangs had a text "Suitable for Aromatics" on their USAAF type description. [24] [25] Toluene can be used as an octane booster in gasoline fuels used in internal combustion engines. Toluene at 86% by volume fueled all the turbo Formula 1 teams in the 1980s, first pioneered by the Honda team.
However, although ATPs are down 2.4% from the beginning of 2023, but the average new car in America will cost you $48,451, up $42 from last year and 0.6% from July, according to Kelley Blue Book.
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 ...