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   What is the octane rating of gasoline?

   • In the U.S., unleaded gasoline typically has octane ratings of 87 (regular), 88–90 (midgrade), and 91–94 (premium). Gasoline with an octane rating of 85 is available in some high-elevation areas of the U.S. (more about that below). The octane rating is prominently displayed in large black numbers on a yellow background on gasoline pumps.

   Selecting the Right Octane Fuel - FuelEconomy.gov

   www.fueleconomy.gov/feg/octane.shtml

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   Are octane ratings required?

   • 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.

   List of U.S. states by standard octane ratings - Wikipedia

   en.wikipedia.org/wiki/List_of_U.S._states_by_standard_octane_ratings

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   What fuels have octane ratings?

   • Racing fuels, avgas, LPG and alcohol fuels such as methanol may have octane ratings of 110 or significantly higher. Typical "octane booster" gasoline additives include MTBE, ETBE, iso-octane and toluene.

   Octane rating - Wikipedia

   en.wikipedia.org/wiki/Octane_rating

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   What does octane mean in gasoline?

   • The higher an octane number, the more stable the fuel. Retail gasoline stations in the United States sell three main grades of gasoline based on the octane level: Some companies have different names for these grades of gasoline, such as unleaded, super, or super premium, but they all refer to the octane rating.

   octane in depth - U.S. Energy Information Administration (EIA)

   www.eia.gov/energyexplained/gasoline/octane-in-depth.php

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2. en.wikipedia.org › wiki › List_of_UList of U.S. states by standard octane ratings - Wikipedia

   en.wikipedia.org › wiki › List_of_U

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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.

   State	Regular Unleaded	Mid-grade Unleaded	Premium Unleaded
   Alabama	87	89	93
   Alaska	87	88.5	90
   Arizona	87	89	91
   Arkansas	87	89	91/93

   See full list on en.wikipedia.org

3. www.eia.gov › energyexplained › gasolineGasoline explained - octane in depth - U.S. Energy ...

   www.eia.gov › energyexplained › gasoline

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   Nov 17, 2022 · In recent years, car manufacturers have been requiring or recommending premium gasoline (a high-octane grade of fuel) for use in more of their vehicle models. The difference in prices between premium and lower octane grades has also increased.

4. Videos

   • 

     caranddriver.com

     Is Premium Gas Worth It? We Test High Octane on 4 Popular Vehicles

     Aug 4, 2019

   • 

     8:16

     youtube.com

     PD Simplified | Fuel Octane : What Should You Use?

     Nov 27, 2021

     223.8K Views

   • 

     3:12

     youtube.com

     What Fuel Should You Use In Your Car? Fuel Octane Rating Explained | Drive.com.au

     Dec 28, 2018

     110K Views

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5. www.reddit.com › r › explainlikeimfiveELI5: Why does American fuel have less octane than ... - Reddit

   www.reddit.com › r › explainlikeimfive

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   US shows the average of the Research Octane Number (RON) and Motor Octane Number (MON) rating, which is the Anti-Knock Index (AKI) while Europe just shows the RON rating which gives a higher number than the MON rating.

6. en.wikipedia.org › wiki › Octane_ratingOctane rating - Wikipedia

   en.wikipedia.org › wiki › Octane_rating

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   An octane rating, or octane number, is a standard measure of a fuel 's ability to withstand compression in an internal combustion engine without causing engine knocking. The higher the octane number, the more compression the fuel can withstand before detonating. Octane rating does not relate directly to the power output or the energy content of ...

7. www.caranddriver.com › features › a28565486Is Premium Gas Worth It? We Test High Octane on 4 Popular ...

   www.caranddriver.com › features › a28565486

   Aug 4, 2019 · We tested higher octane fuel than manufacturers require on the Honda CR-V, BMW M5, Ford F-150, and Dodge Charger to see if it impacted acceleration or MPG.

   • Email: etingwall@hearst.com

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8. www.aaa.com › autorepair › articlesDon't Confuse Gasoline Octane And Quality | AAA Automotive

   www.aaa.com › autorepair › articles

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   Premium gasoline typically has an octane number four to six points higher than regular – 93 versus 87 for example. (Image: U.S. Department of Energy ) Contrary to popular belief, premium grade fuel does not contain more power than regular.

9. www.fueleconomy.gov › feg › octaneSelecting the Right Octane Fuel - FuelEconomy.gov

   www.fueleconomy.gov › feg › octane

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   In the U.S., unleaded gasoline typically has octane ratings of 87 (regular), 88–90 (midgrade), and 91–94 (premium). Gasoline with an octane rating of 85 is available in some high-elevation areas of the U.S. (more about that below).