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 ...

The EPA recently announced plans to lower proposed fuel economy standards but automakers are still trying to eke out as much mileage as they can with current technology. As part of this initiative, ...

We have to separate the chemical "octane" from a fuel's "octane rating" since they can be two different things. Think about it this way. If you learned your shapes in kindergarten, you should easily ...

Our gas is listed in a range of octane offerings, but American automakers are looking to simply that. By doing so, they say, they'll clean up the air, boost fuel economy, and save us money at the pump ...

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 ...

Every gasoline-powered car comes with recommendations about what fuel should be used in it. But with the high gas prices in some areas, many find themselves standing at the pump wondering if it’s OK ...

DENVER (KDVR) — Gas pumps in some Western states look a little different than the rest of the country. Most states have the option of choosing octane ratings of 87 (regular), 88–90 (midgrade) and ...

My wife has recently acquired a three-year old Nissan Note Techna 1.6 Auto (2010) which recommends 95 Octane unleaded petrol. Some garages only stock 91 and 97 Octane petrol. What is the downside with ...

A family's decision to use 91 octane petrol in their European car to save money has backfired. Aron and Adelle Bailey remain thousands of dollars worse off after losing a case against a dealer in the ...

Q: I drive a 2001 Lexus LS430 with 58,567 miles. The car manual says I should use gasoline with an octane of 96 or higher. I cannot find an octane that high. Any suggestions? — J.S., Fort Lauderdale, ...

Costco’s premium gas, available at locations nationwide, has sparked a debate among drivers about its exact octane rating. Is it 91 or 93? And does this difference have any significant impact on their ...