Costco’s premium gasoline is rated at 91 octane, not 93 — a solid choice for most vehicles, though some high-performance engines may call for higher.

I just purchased a 2025 Acura RDX certified vehicle. The fuel requirement is premium fuel preferred, and they highlight ...

Fuel comes in different grades based on octane level at gas stations. Only some performance engines require Premium fuel for the best power output, fuel efficiency, and engine function. Are you ...

Is there any benefit to filling up your bike with an octane level above what the manufacturer recommends or is it just ...

Modern Hemi engines, the iconic powerplants from Chrysler, have sparked a debate among owners about their fuel needs.

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 ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DENVER (KDVR) — Gas pumps in some Western ...

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, ...

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 ...