You're probably familiar with the term E87 gasoline, but how much ethanol is actually in it? Here's everything we know about ...

Ever wonder about those yellow gas pumps marked E85 that dispense fuel that's typically slightly less expensive than the station's other options? E85 is an ethanol-heavy blend of gasoline that ...

Premium gas sounds like it’s something special. But it translates into paying extra for a higher octane without any performance or fuel-economy benefits for many cars. That’s what we found ...