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  1. 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. By Eric Tingwall Published: Aug 4, 2019...

    • etingwall@hearst.com
    • Print Director
  2. Premium is higher octane. This allows higher compression before the fuel starts detonating. This higher pressure allows more power. Very few cars actually make use of higher octane. High octane fuels were originally meant for combat aircraft which required extreme turbocharger pressure to reach high power levels.

  3. Sep 4, 2024 · In most places, regular gasoline has an 87 octane rating, while premium is 91 to 94 octane. A higher octane rating means the gas is more compatible with higher compression ratios.

  4. Jul 18, 2024 · Premium gas sounds like it’s something special, but it translates into paying extra for a higher octane without any performance or fuel-economy benefits for many cars. That’s what we found...

  5. Sep 11, 2024 · Regular gas with an 87 octane level is suitable for most engines, while some high-output engines require premium gas with higher octane levels (91-94).

  6. Mar 19, 2019 · The numbers on the gas pump indicate how much octane the fuel contains: 87-octane gas is considered regular-grade; 89-octane is mid-grade; and 91-octane and above is premium. Octane is a hydrocarbon molecule, but it isn’t an additive that’s mixed into the fuel.

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  8. May 1, 2020 · Engines with high combustion ratios or forced induction (turbo charger or super charger) will require higher octane gas. Higher octane fuel will not offer any better fuel mileage, increase engine horsepower, or make the engine start quicker.

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