Miscellaneous Vehicles

What is unleaded 91?

Answer

User Avatar
Wiki User
10/06/2007

Regular unleaded is what you buy at the normal gas station. There are usually three levels of octane(87 / 89 / 91 / 93). Ok that's four, But I can't remember what the exact three are. So you get the idea "91" is just an Octane level of the fuel. I hear it's hard to find unleaded 91 in some places of Florida. Also the newer Vehicles usually ask for the higher octane. Hope I helped ... kub