3.6L Engine
Jeep Grand Cherokee / Jeep Grand Cherokee Owners Manual / Starting and operating / Fuel Requirements / 3.6L Engine

This engine is 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.
See also:
Adding Fluid
Fluid should be added only at filler hole until fluid begins to run out of the
hole. ...
Chassis
...
Towing Tips
Before setting out on a trip, practice turning, stopping
and backing the trailer in an area away from heavy
traffic. ...


