Jeep 2008 Patriot - Manual (Page 257)

• Unique Engine Calibration – When the system has
the 4WD lock lever engaged and is in the Low
Off-Road mode or reverse, the engine calibration
changes to run higher spark advance with premium
fuel for optimum off-road performance. Your vehicle is
equipped with an active spark knock system and can
adjust the engine calibration for a varying range of fuel
octane levels.
High Mobility Characteristics
The Freedom Drive II Off-Road package has high off-
road mobility characteristics with an approach angle A=
29 degrees, a break-over angle B= 23 degrees, a running
ground clearance C= 9 in (23 cm), a departure angle D=
33 degrees, and a turning circle of 35.6 ft (11 m).
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