Pretty simple question actually (or so my ignorant mind thinks): At what compression ratio would an engine benefit from higher octane fuel? The Focus I drive is just over 10:1, and I've heard some say ...

We might be covering ground that's well trampled for many, but the static compression ratio of an engine is simple to understand: it's all the volume of a cylinder above the compression ring at Bottom ...

With all the different engine and combustion theories being tested at the Engine Masters Challenge, it made us wonder about the fuel these powerplants were gulping down. For the 2015 event, we had ...

There are two major elements that bring the Corvette mystique to life. First is power. Power animates the drivetrain and gets your Corvette moving so you can enjoy the thrust and handling enhancements ...

EVEN at the cheapest petrol station in your correspondent's neighborhood, filling up the family kidmobile with premium (91 octane) fuel now costs over $70. As the meter clocks up dizzying dollar ...

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 ...

If you're scratching your head wondering which number gasoline to put in your car, don't overthink it. Just Google the manufacturer's recommendation and run with that. If you're curious about what ...

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 ...