There are different gasoline grades based on octane. Here's how to tell which grade of fuel your car needs and why.

Today, the biggest difference between gasoline brands is the type of fuel-system cleaning additives used. However, the EPA ...

Some new cars claim to require premium fuel, others recommend it and most new vehicles on the road today are perfectly happy with regular fuel with nary a hiccup. Simultaneously, we're bombarded by ...

Cost is often the first thing that comes to mind when motorists think of gasoline. Many will drive halfway across town to save a couple cents per gallon. Additionally, purchasing regular-grade fuel to ...

I’m pretty enamored of my car, so I try to do right by her by using premium gasoline. But is 93-octane gas significantly worse for the environment than run-of-the-mill unleaded? As a native Angeleno ...

In most gas stations, next to the regular unleaded gasoline and diesel nozzles, one can find these additional pumps with labels promoting their benefits. That begs an obvious question: what are these ...

A large variety of fuel options and prices are available - Bill Ragan/Shutterstock Premium gasoline is for cars. More specifically, it's for a relatively small number of them that have engines with ...

There is no sense paying a premium for premium gasoline if your car is designed to run on regular, according to research by the automobile club AAA. Some drivers occasionally like to treat their cars ...

DETROIT -- Automakers and oil companies are quietly developing a new generation of fuels and engines to run more efficiently on them, generating more power from less gasoline to reduce emissions and ...

I recently replaced my wife's 2012 Mercedes-Benz E350 4Matic wagon with a 2016 Volvo V60 Drive-E, a station wagon that impressed me when this magazine had a similar Four Seasons test car in its fleet ...

Dodge’s forthcoming halo car, the Challenger SRT Demon, will have expensive taste. Outfitted with a supercharged HEMI engine, the super-powerful street-legal drag racer will run on either 91-octane ...

With the price of regular unleaded gasoline still in the $4-a-gallon range, the comparative price of premium is kind of a bargain at many stations. Really. When the price of regular surged this spring ...