Fuel Requirements

All engines are designed to meet all emissions

All engines are designed to meet all emissions regulations and provide excellent fuel economy and performance when using high quality unleaded “regular” gasoline having an octane rating of 87. The use of premium gasoline is not recommended, as it will not provide any benefit over regular gasoline in these engines.

Light spark knock at low engine speeds is not harmful to your engine. However, continued heavy spark knock at high speeds can cause damage and immediate service is required. Poor quality gasoline can cause problems such as hard starting, stalling, and hesitations. If you experience these symptoms, try another brand of gasoline before considering service for the vehicle.

Over 40 auto manufacturers worldwide have issued and endorsed consistent gasoline specifications (the Worldwide Fuel Charter, WWFC) which define fuel properties necessary to deliver enhanced emissions, performance, and durability for your vehicle. The manufacturer recommends the use of gasoline that meets the WWFC specifications if they are available.

See also:

Clock Setting Procedure
1. Press and hold the TIME button until the hours blink. 2. Adjust the hours by turning the right side TUNE/ SCROLL control knob. 3. After adjusting the hours, press the right side TUNE/ SCROLL cont ...

Seat Belt Maintenance
Do not bleach, dye or clean the belts with chemical solvents or abrasive cleaners. This will weaken the fabric. Sun damage will also weaken the fabric. If the belts need cleaning, use MOPAR Total ...

Safety
The 2011 Grand Cherokee is a 2010 Top Safety Pick from the Insurance Institute for Highway Safety. To earn the designation, it received Good overall scores in IIHS' frontal-offset crash test, side ...