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The Daily Insight

What is premium fuel

Author

Jessica Wood

Published May 09, 2026

Premium gasoline is generally considered any type of gasoline with an octane level

What's the difference between premium and regular gas?

Regular gas has the lowest octane rating, Premium has a higher octane and Super (or Supreme or Premium Plus) has the highest octane. Octane is the measure of the fuel’s ability to resist “knock”. … Putting premium fuel in a low compression engine or putting regular gas in a high compression engine.

Can you put regular gas in a premium car?

Can I mix premium and unleaded gas? Yes, drivers can mix the two types of fuel. The combined gas types will result in an octane level somewhere in the middle — something the vehicle “will survive,” according to The Drive.

Does premium fuel make a difference?

The main difference with premium is its octane rating — 91 or higher compared with 87 for regular octane. … The higher octane of premium gas won’t make your car faster; in fact, the opposite is possible because higher-octane fuel technically has less energy than lower-octane fuel.

Is premium fuel bad?

“Use premium unleaded gasoline with a posted octane rating of 91 or higher. If the octane rating is less than 91, you could damage the engine and may void your vehicle warranty. If heavy knocking is heard when using gasoline rated at 91 octane or higher, the engine needs service.”

Does premium gas burn cleaner?

Nope. Regular, plus, and premium gas all come with detergents to mitigate against carbon deposits in your engine. Plus and premium don’t come with special powers for cleaning out the engine. If you’re interested in cleaning out your engine, you’re better off taking it in for service.

Does premium gas last longer?

Sadly, there’s nothing in premium gasoline that would make it last longer than other fuels from the pump. Since the distinguishing feature is the higher-octane levels, the only real benefit you gain is lowering the chance of engine knocking, which isn’t much of a threat on most modern fuel systems.

Why is premium fuel so expensive?

According to the latest data from AAA (which tracks fuel prices daily instead of the EIA’s weekly), premium costs $2.80 per gallon on average, or 60 cents more than regular. … AAA said the demand for premium gas is due to more car owners “treating themselves” as pump prices drop. That’s true, up to a point.

What happens if you put 93 gas instead of 87?

Each engine is designed to run correctly on any fuel above the minimum octane rating. Generally higher compression, and hence higher performance engines run better on higher octane. Octane is resistance to pre ignition or knock. If the engine does not knock on 87 octane, it also will not knock on 93 octane fuel.

When should you use premium gas?

Typically, high-performance cars require premium, because their engines have higher compression ratios, while other cars can run just fine on lower octane gas. But using higher octane gas than your car requires isn’t actually better for your car.

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What happens if I don't put premium gas in my car?

Other things to consider: failing to use high-octane fuel in your premium vehicle could cause engine knock or pinging, which sounds like there’s a large woodpecker under your hood; you could experience damage to your components; and using the wrong octant level could even void your warranty. Ouch.

Which vehicles require premium gas?

  • Buick Envision (with 2.0L turbo)
  • Buick Regal (all models)
  • Buick Regal TourX (all models)
  • Chevrolet Equinox (with 2.0-L turbo)
  • Chevrolet Malibu (with 2.0-L turbo)
  • Fiat 500L (all models)
  • GMC Terrain (with 2.0-L turbo)
  • Honda Civic (with 1.5-L turbo)

Does premium gas burn slower?

Fuel with an 87 octane rating burns more quickly while higher-octane fuels burn more slowly. In engines designed for standard unleaded fuel, efficiency and performance is optimized for 87 octane and could actually perform worse with higher-octane fuel since the burn rate is slower.

What is the best gas to put in your car?

It is better for your car to use 87, 88 or even 91-octane gas than to go too low. If you have a luxury car that needs premium gas, try to fill up before driving to a high-altitude location in case you cannot find a gas station that provides the octane you need.

Why do some cars require premium gas?

Simply put, high-octane gasoline can be compressed and heated to a greater degree without self-igniting. That’s why high-performance engines use premium fuel. … Since the engine doesn’t make quite as much power with low-octane fuels, this translates into slower acceleration in cars for which premium fuel is recommended.

How much extra is premium gas?

One obvious difference is the price. According to the U.S. Energy and Information Administration premium fuel nationally averages about 60 cents more per gallon than regular gasoline, and 25 cents more than midgrade gas.

Does cheap gas hurt your car?

You can stop worrying about using cheap gas. Many experts say it’s unlikely to hurt your car. … Additives can also raise the price of the gas. “If you buy gas from Bob’s Bargain Basement gas station because that’s all that’s available, it won’t hurt your car,” says John Nielsen, AAA’s director of engineering and repair.

Should I use premium gas in my lawn mower?

You should use regular gas in your lawn mower. Running a smaller engine on premium gas isn’t necessary. Premium gas is designed for engines with a higher compression ratio which are generally found in high powered cars. While premium gas may not hurt your mower’s engine, it will hurt your wallet.

Does higher octane increase mpg?

So is Higher Octane Fuel More Efficient? In a word, no. On its own paying for premium gasoline does not make your car run better or get greater gas mileage. Giving your car the fuel it requires to run smoothly and efficiently, without damage to the engine, does make a difference in your fuel mileage.

How often should you fill your gas tank?

Consumption is on the output side of the tank. It doesn’t matter what you do on the input side unless your fill pattern causes extra mileage to buy gas. To minimize time, fill the tank when it is down to 50 miles. If you only fill it halfway, then you have to fuel twice as often.

Is it bad to put 91 in a car that takes 87?

If you usually fill your tank up with 87-octane gasoline and you accidentally put in a higher octane blend (say, 91, 92, or 93), don’t worry. … You’re actually filling your car or truck with a different blend of gas, which means it will burn differently in your engine.

Is premium gas a myth?

MYTH 1: Premium gas is better for your car. It’s true that premium is the better gas in terms of octane levels, but that doesn’t mean it’s better for your car. Higher-octane fuel is designed for high performance vehicles, such as Corvettes or Porsches. Your owner’s manual will tell you if it’s required for your car.

Does premium gas clean your engine?

Today’s premium fuels contain additives and detergents that help clean fuel injectors and remove carbon deposits inside of engines, thus, incentivizing motorist with engines that use regular fuel to, on occasion, use premium gas to clean their engines.

What happens if you put 87 in a BMW?

Regular gas is lower octane, usually 87 or 88. … Putting low octane fuel in a car with a high-compression engine could cause the engine to knock or ping, which could cause major damage if it goes on for a long time.

What happens if you put premium gas in a regular tank?

Premium gas has a higher-octane level than regular gas; or, in other words, a higher resistance to detonation. As various pressures rise inside of the cylinder of the engine, this will also result in a temperature rise, and the gasoline will sometimes detonate, or, “explode” in the cylinder.

Do all Infinitis require premium gas?

Should I Use Premium Gas With INFINITI? INFINITI recommends using 91 octane premium unleaded gasoline for desired performance and horsepower. Your INFINITI engine needs high-octane gasoline to function as it was designed for premium performance, so treat it with the proper fuel anytime you’re at the pump.

What is the longest lasting fuel?

Which fuels have the longest shelf life? Propane, alcohol, wood, and charcoal are examples of good emergency storage fuels that can be stored indefinitely and still remain viable.

What gas last the longest?

93 octane fuels are more refined and contain more stable hydrocarbons. These stable hydrocarbons can last 2-3 times longer than 87 octane fuel. Even in proper storage 87 octane gas can start to degrade in 3 months, 93 octane fuel should last closer to 9 months before degradation is noticeable.

Does premium fuel give better mileage?

Premium gives better gas mileage Because premium gas has a higher octane rating than midgrade or regular gas, it produces a little more power when burnt. Designed for performance cars with large, powerful engines, premium also helps minimize the risk of preignition inside highly-stressed, hot engine cylinders.

Who has the best quality gas?

  • Shell.
  • Costco.
  • Mobil.
  • Chevron.
  • Sinclair.

What are the 3 types of fuel?

There are three types of fossil fuels which can all be used for energy provision; coal, oil and natural gas.