The octane rating on gasoline determines how well it will run your car. We tell you how to pick the correct octane for your car and what the difference is.

You're probably familiar with the term E87 gasoline, but how much ethanol is actually in it? Here's everything we know about that (and 85 Octane as well).

Unveiling the Octane Ratings - from knocks to burns, demystify the numbers on the pump for optimal car performance. Get fuel-savvy insights now.

You have a choice when you pull up to the pump.Most gas stations have three choices for fuel for your vehicle, based mostly on octane ratings.Which one is the best for your vehicle?

The 88-octane is just a fancy way of saying e15 gas. This is a blend of gasoline that blends gas with 15 percent ethanol. 87-octane can have no more than 10 percent ethanol.