Learn when premium fuel is actually required, what the different grades mean, and how to avoid paying too much.

Engine knocking, or detonation, occurs when fuel in the cylinders ignites unevenly, causing metallic pinging sounds, reduced power, and potential engine damage. Key causes include low-octane fuel, ...

A mechanic has warned motorists that using premium petrol and diesel will not always result in drivers getting better fuel economy. Brian, who runs the YouTube channel Honest Mechanic Colorado, ...

We all want the best for our cars and trucks, but is premium gas worth the premium cash?

Summer’s here, and so is summer gasoline. The pricier blend, which Canadians buy for about five months a year, replaces some of the fuel’s butane with alkylates. It reduces emissions and is better for ...

Premium and Top Tier gas sound good, but what’s really best for your car — and your budget? In some cases, these types of fuel are indeed better for your car — but for different reasons. Premium gas, ...

At most gas stations, you’ll find four main types of fuel: regular unleaded (95), premium unleaded (98), diesel, and gaseous fuels like LPG or LNG. If your vehicle runs on gasoline, you might wonder: ...

Using premium gasoline with a higher octane rating can improve how certain designs of motor vehicle engines perform. But does that mean you should consider using it with other motors at your house, ...

These numbers are the octane rating of the fuel, as measured by the Research Octane Number (RON) and you’ll find the octane rating for your vehicle on a label inside the fuel door flap, or in the ...

Q: Can you mix 91, 95 or 98 petrol together? A: Yes, you can, as long as you always use fuel with a higher RON (Research Octane Number, also known as octane rating or octane level, is an indicator of ...