What actually is octane?

Credit: ACS.

Do you fill your tank up with premium gas?

The American Automobile Association estimates that Americans waste $2 BILLION a year buying premium gas when they don’t need it.

What’s even the difference between regular and premium gas? It all has to do with the octane rating.

When most of us go to the gas station, we choose regular or premium gas without thinking too much about it.

But in this video, we’ll explore the science behind octane ratings and why it matters which one you put into your engine!

Reactions is a video series produced by the American Chemical Society and PBS Digital Studios.

The American Chemical Society (ACS) is a nonprofit organization chartered by the U.S. Congress.

ACS’ mission is to advance the broader chemistry enterprise and its practitioners for the benefit of Earth and all its people.

The Society is a global leader in promoting excellence in science education and providing access to chemistry-related information and research through its multiple research solutions, peer-reviewed journals, scientific conferences, eBooks and weekly news periodical Chemical & Engineering News.

As a leader in scientific information solutions, its CAS division partners with global innovators to accelerate breakthroughs by curating, connecting and analyzing the world’s scientific knowledge.

ACS’ main offices are in Washington, D.C., and Columbus, Ohio.