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Most states do not mandate certain standard gasoline grade octane ratings.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.
United States: in the US octane rating is displayed in AKI. In most areas, the standard grades are 87, 89–90, and 91–94 AKI. In the Rocky Mountain (high elevation) states, 85 AKI (90 RON) is the minimum octane, and 91 AKI (95 RON) is the maximum octane available in fuel. [ 79 ]
N-octane is the octane isomer that has the longest carbon skeleton. Unlike its constitutional isomers, it has a very low knock resistance. The octane isomer, iso-octane, is used as one of the standards for octane ratings. It has a rating of 100 by definition. The octane isomer 2,3,3-Trimethylpentane has an octane rating exceeding 100.
Octane rating is measured relative to a mixture of 2,2,4-trimethylpentane (an isomer of octane) and n-heptane. There are different conventions for expressing octane ratings, so the same physical fuel may have several different octane ratings based on the measure used. One of the best known is the research octane number (RON). The octane rating ...
State. Average Monthly Rate: Minimum Coverage. Average Monthly Rate: Standard Coverage. Average Monthly Rate. Michigan. $151. $522. $481. New Jersey. $120. $390. $360
Companies that pay dividends have outperformed non-payers by more than two-to-one over the last 50 years (9.2% average annual total return versus 4.3%), according to data from Ned Davis Research ...
High percentage ethanol mixtures are used in some racing engine applications as the very high octane rating of ethanol is compatible with very high compression ratios. Ethanol fuel mixtures have "E" numbers which describe the percentage of ethanol fuel in the mixture by volume, for example, E85 is 85% anhydrous ethanol and 15% gasoline. Low ...
List of U.S. states and territories by Human Development Index score; List of U.S. states by Hispanic and Latino population; List of U.S. states by median home price; List of U.S. states and territories by intentional homicide rate; List of U.S. states and territories by violent crime rate; List of U.S. states by American Human Development Index