* Gasoline: The most common fuel type for the 2009 Wrangler was gasoline. Specific octane requirements would depend on the engine.
* Diesel (in some models): Some 2009 Wranglers were available with a diesel engine, which would require diesel fuel. This was less common than the gasoline options.
To know for certain what fuel a specific 2009 Jeep Wrangler uses, you need to check the vehicle's owner's manual or the fuel filler cap.
