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.

TOLEDO, Ohio — Whether you’re planning a road trip or just stopping to fill up after work, gas prices are always on drivers’ minds. One type of fuel is standing out for being consistently cheaper: ...

Premium gas can give some cars a boost, hyping performance and making sure the engine runs smoothly. But not every car can ...

Fuel comes in different grades based on octane level at gas stations. Only some performance engines require Premium fuel for the best power output, fuel efficiency, and engine function. Are you ...

Octane ratings refer to the stability of fuel, and dictate at which pressures the fuel will spontaneously combust. Engine knocking can happen when the octane rating is too low, resulting in pinging ...

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 ...

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, ...