5.7L Engine

This engine is designed to meet all emissions

This engine is designed to meet all emissions regulations and provide satisfactory fuel economy and performance when using high-quality unleaded gasoline having an octane range of 87 to 89. The manufacturer recommends the use of 89 octane for optimum performance. 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 gasolines that meet the WWFC specifications if they are available.

    See also:

    Powertrains
    The all-new 2011 Jeep Grand Cherokee is available with two leading engine options for North American markets. The 2011 Jeep Grand Cherokee's standard engine is an all-new flexible fuel 3.6-liter ...

    Buttons 1 - 6
    These buttons tune the radio to the channels that you commit to pushbutton memory (12 Satellite stations). ...

    Lap/Shoulder Belts
    All seating positions in your vehicle are equipped with lap/shoulder belts. The belt webbing retractor is designed to lock during very sudden stops or accidents. This feature allows the shoulder pa ...