Gas prices remain stubbornly high, with regular-grade fuel averaging $3.50 per gallon nationwide according to the AAA. That’s lofty enough, but for those who drive a car that requires premium-grade ...

Are you overpaying for premium gas or getting suboptimal performance out of your car because you're feeding it the wrong fuel? Gasoline is categorized by octane ratings at gas stations. Most drivers ...

According to TikTok user Michael (@schoolhousecaulk), the answer might surprise you—and deter you from buying mid-grade gasoline ever again. “The button that says mid-grade gasoline at gas stations in ...

DENVER (KDVR) — Gas prices are fluctuating across the country, and a few states offer a “cheaper” octane option that isn’t found in most places. It has to do with the altitude. Most states have the ...

With the dizzying array of options at some gas pumps, it can be hard to decide if you should use premium gas in your car or take the less expensive option. Owners of vehicles equipped with modern Hemi ...

I have a 2016 Toyota Avalon. The manual says that I should use 89-octane gasoline. I like to buy gas at my local Costco store, where the price is always lower than at the neighboring gas stations.

Tugboat was my family's 1987 Dodge Caravan, which faithfully served us for years until its transmission finally exploded one lovely summer afternoon. Her 3-liter V6 was electronically fuel-injected, ...

Gasoline is a mystery to most hot rodders. For the most part, we just fill up the tank and forget about the fuel. The most difficult question is whether to step up from 89 to 92 octane. As you might ...

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87 octane gasoline, often called "regular" gas, is one of the most commonly used fuels in the United States. But what gives it that 87 rating is a word you've probably heard a time or two: Ethanol.

The answer depends on the age of your vehicleBy Devin PrattYou might have noticed that some gas stations occasionally offer ...

You might have noticed that some gas stations occasionally offer specials on unleaded 88 octane gas—also known as E15—which contains 15 percent ethanol. Ethanol is an alcohol that’s derived from corn.