We may receive a commission on purchases made from links. 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 ...

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 ...

As gas prices increase, you may be wondering what level of premium fuel you actually need. Some car manufacturers recommend or require premium gasoline, but with the national average reaching $5 a ...

If premium fuel is necessary to match the horsepower, acceleration, or towing figures used in advertisements and listed on ...

For decades, the automotive market has maintained an unspoken hierarchy: if you step up to a luxury vehicle, you step up to premium fuel. The common assumption is that higher-octane gas delivers ...

DENVER — Unless you have a turbocharged engine, regular 85 octane fuel may be the most expensive gas purchase you need. But for more miles per gallon, 87 octane may be the better buy than 91 octane ...

Add Yahoo as a preferred source to see more of our stories on Google. DENVER (KDVR) — Gas pumps in some Western states look a little different than the rest of the country. Most states have the option ...

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 ...