We’ve been burning gasoline for well over a hundred years now, but some misconceptions about fuel—especially when it comes to octane—are so ingrained in the popular consciousness that even those of us ...

Environmentalists and car crafters make strange, if not odd-opposite, bedfellows. The greenies are all over this not-so-new, environmentally friendly, renewable resource ethanol fuel that even has GM ...

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

Gasoline is a mystery to most hot rodders. For the most part, we just fill up the tank and forget about the fuel. The most difficult question is whether to step up from 89 to 92 octane. As you might ...

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 ...

Customers who bought premium gasoline from Los Angeles-area Mobil stations in recent months may have gotten a little less oomph in their tanks than usual. Government inspectors are investigating ...

Two steps forward make no progress on a treadmill stuck in reverse. Still, US Reps. Bill Flores (R-Tex.) and John Shimkus (R-Ill.) deserve credit for recognizing that the Renewable Fuel Standards (RFS ...

Filthy myths run rampant when it comes to understanding race gas. Some say that the higher the octane the slower the burn rate. Others claim that too much octane reduces horsepower. Unfortunately, ...

Combustion chamber deposits accumulate in a new gasoline engine and can result in an octane requirement increase (ORI) of as much as 8 to 10 octane numbers. In some cases, a higher octane fuel is ...

A method tested on various diesel blends of known cetane numbers showed a good correlation with the fuel’s octane numbers. Spontaneous ignition results in knock in a spark-ignition engine, whereas ...