Pulling up to a gas pump means making the ultimate decision between regular or premium gas. Does premium gas make a ...

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 ...

E15 fuel is becoming more common, but that doesn't mean it's right for your car. Here's what you need to know about E15 and ...

We all want the best for our cars, but recent fuel price hikes have forced many motorists to reconsider whether paying extra ...

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 ...

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 ...

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 ...

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, ...

Alaskans have wondered for years why they can't find gas higher than 90 octane. Oddly enough, we can't find one public acknowledgment of this limit by anyone in the oil industry or any government ...