Learn when premium fuel is actually required, what the different grades mean, and how to avoid paying too much.

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, ...

The answer is yes: You can mix 87 and 91 octane gasoline without blowing your engine to hell. With that out of the way, let's discuss what mixing different octane fuels does to your engine in terms of ...

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 ...

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.

With all the different engine and combustion theories being tested at the Engine Masters Challenge, it made us wonder about the fuel these powerplants were gulping down. For the 2015 event, we had ...

Aside from the price, have you ever driven into the petrol station and wondered ...

When filling up a MINI Cooper at your local gas station, you have the option to use either premium or regular gasoline. Although both types of fuel are acceptable, premium gas is recommended for MINI ...

Drivers in New York City aren’t getting the fuel they pay for at gas stations. A report by the Department of Consumer and Worker Protection shows that almost every gas station in NYC has failed at ...