How To What is the best octane gasoline for my vehicle? John Paul, AAA Northeast's Car Doctor, answers a question from a reader wondering whether they need to follow the manufacturer’s gasoline ...

If you've ever fueled up in Colorado, you might have noticed something unusual about the gas octane ratings at the pump -- specifically, the availability of 85-octane gasoline. This lower octane fuel ...

Q. Is it necessary to use premium 91 octane gas or can I safely use regular 87 octane in my 2017 Acura RDX? What about ...

The higher the fuel’s octane rating, the less likely it is to prematurely ignite and cause engine knocking. phive2015/Adobe Stock We see the numbers every day at the local gas station, with gas sold ...

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 ...