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  1. 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
    87
    89
    93
    87
    88.5
    90
    87
    89
    91
    87
    89
    91/93
  2. Ethanol Free Gas Vs Premium Gas differ in their octane rating. According to most states, ethanol-free gasoline is rated 87 octane, as opposed to premium gasoline, which is rated 91 to 93. Premium gas has a higher octane rating, which reduces the risk of engine knock, the result of an engine combusting too early on its fuel and air mixture.

  3. 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. A minimum 82 octane fuel is recommended for most vehicles produced since 1984.

  4. Do I have to drive a premium recommended or required car to get any benefit from Shell V-Power® NiTRO+ Premium Gasoline? No, you dont. OEMs design engines to meet power, fuel economy, and emissions requirements at a specific minimum octane rating.

    • What Is Octane Rating?
    • Which Gasoline Or Fuel Should I Put in My Car?
    • What Is Flex Fuel?
    • Understanding Diesel Fuel
    • What Is Ethanol-Free Gas?
    • Why Do Some Gasoline Types Cost More Than Others?
    • Price Factors For Gasoline
    • Does Gasoline Go Bad?

    The octane rating on different grades of gasoline is a measurement of the fuel’s stability. Higher octane numbers mean greater stability. The greater stability indicates the gasoline’s resistance to preignition and the fuel’s ability to resist “knocking” or “pinging” during combustion. These sounds come from the air-fuel mixture detonating prematur...

    The fundamental rule of car maintenance is to follow the manufacturer’s guidelines in the owner’s manual. It will show the minimum octane level for the vehicle and whether premium gas is recommended or required.

    E85 is a fuel designed for “flex-fuel vehicles.” It is a blend of 51 – 83% ethanol and the balance gasoline. E85 pumps are clearly labeled at gas stations and typically have yellow nozzles. Flex-fuelvehicles usually have a yellow fuel cap. Using gasoline of any octane level in a flex-fuel vehicle is OK. However, putting E85 in a car that isn’t desi...

    Diesel fuel is the common term for petroleum distillate fuel. Gasoline and diesel engines operate differently and use different types of fuel. Vehicles that use compression ignition engines use diesel fuel, while spark-ignited engines use gasoline. In general, diesel engines work more efficiently and provide greater torque, even though they generat...

    Non-ethanol gas is gasoline that isn’t blended with ethanol. This type of gas isn’t sold at every filling station. Using pure gas can lead to better mileage. But increased fuel economy from using ethanol-free gas may be offset by its higher cost. Non-ethanol gasoline typically costs more than ethanol-blended varieties. Using non-ethanol gas in your...

    A significant difference between grades of gasoline is the cost, and motorists often wonder why higher-grade options cost more. The additives used for boosting octane are generally more expensive to produce. At the time of this writing, the average price of regular unleaded in the United States is $3.26 per gallon, and a gallon of mid-grade costs $...

    Many factors determine gasoline prices. Drivers often see higher prices in the summer driving season. Supply from refineries and demand from vacationing motorists can add up to 15 cents per gallon to gas prices in the summer months. Additionally, seasonal gasoline blends found at the pump contribute to price differences from one season to the next....

    The volatile compounds of gasoline naturally degrade over time, and the combustibility of old gas decreases, even when properly stored. Gasoline can go bad from contaminants such as dirt and rust. Old gas may be refreshed to usable condition by mixing it with a high ratio of fresh gasoline. Do not use contaminated gas to power any equipment because...

  5. Nov 17, 2022 · What is octane? 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. Octane ratings are measures of fuel stability.

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  7. The key difference between regular and premium gasoline is octane – the ability of the fuel to prevent engine detonation or "knock." Uncontrolled knocking can cause severe engine damage and expensive repairs. Premium gasoline typically has an octane number four to six points higher than regular – 93 versus 87 for example.

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  2. Shell V-Power Nitro+ Premium Gasoline Protects Against Gunk, Wear, Corrosion And Friction. Shell V-Power® Nitro+® is Engineered with 4 Levels of Engine Defense

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