We have to separate the chemical "octane" from a fuel's "octane rating" since they can be two different things. Think about it this way. If you learned your shapes in kindergarten, you should easily ...

Refueling with premium gas can add a significant amount to your annual bill compared to buying regular gas, but in New York, buyers might be receiving lower grade fuel regardless of what they pick. A ...

When this Bismarck, North Dakota, Costco ran out of regular gas, they made a move that had shoppers losing their minds.

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Should you use unleaded 88 octane gas (also known as E15), which contains 15 percent ethanol, instead of standard 87 octane ...

Costco’s premium gas, available at locations nationwide, has sparked a debate among drivers about its exact octane rating. Is it 91 or 93? And does this difference have any significant impact on their ...