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93 is widely available in the Chicago area. Elsewhere in Illinois, 93 is offered at Shell and select other stations. 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
Gas stations have gasoline with different octane ratings. Higher numbers indicate that the fuel can better avoid unintended combustions within the cylinders of the engine. Due to its name, the chemical "octane" is often misunderstood as the only substance that determines the octane rating (or octane number) of a fuel.
Octane has many structural isomers that differ by the location of branching in the carbon chain. One of these isomers, 2,2,4-trimethylpentane (commonly called iso-octane), is used as one of the standard values in the octane rating scale. Octane is a component of gasoline and petroleum.
Gas prices by year. Gas prices within the last 10 years highlight how volatile the market can be. When looking at historical data, gas prices were the same in 2011 as they were in 2023 — $3.52 ...
Keep reading to learn the cost of gas the year you were born. Everett / Shutterstock.com. 1929. Price of a gallon of gas: $0.21. In 2022 dollars: $3.53. Library of Congress. 1930.
The national average price for a gallon of gasoline is at $3.43, according to AAA as of Feb. 10, 2023. While the amount of pain at the pump people feel is more or less acute depending on their ...
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 cost of gas has been volatile in recent years as markets react to world events, but it hasn't always been that way. Skip to main content. News. 24/7 help. For premium support please call: ...