We’ve been reporting for years that there’s zero advantage to using a higher-octane gasoline than your car requires, and that you can also get away with regular gas if your car merely recommends ...

Labeling different gases as “regular” and “premium” is a bit misleading, as many cars only require regular gas and should only run on regular gas. Premium gasoline is not necessarily a luxury product ...

Today’s gas-saving moment comes courtesy of Cars.com senior editor Joe Wiesenfelder, who has an interesting idea about octane ratings. We mentioned before that unless your car “requires” a higher ...

It's always a tough choice when you're running on fumes and the only pump left has regular gas, while your car runs on premium gas. You might also have accidentally picked a different gas choice than ...

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 ...

Want to get into a heated argument? Try explaining to the public why unleaded is a nickel per gallon higher than regular or how regular and premium have changed in the last few years. Then clarify how ...

Q. I drive a ’99 Pontiac Grand Am. Since I bought it new, I have been using the highest octane gas. Now with the high gas prices, would I be doing damage to the car if I lowered the octane? R.M., ...