Ford Crown Victoria 2011 Owner's Manual page 271

Driving in the overdrive cancel mode for prolonged periods at high speeds
will deteriorate performance and may cause extensive engine damage.
Crown Victoria police vehicles are designed to operate in
the (Overdrive) gear selector position while in pursuit. Optimum
performance will be obtained in
cancel mode should only be used in situations noted in this publication.
WARNING: Under no circumstances should the aluminum
driveshaft be replaced with a steel driveshaft. Doing so will
adversely affect vehicle operation which could lead to personal injury.
POWERTRAIN OVERSPEED PROTECTION
The powertrain control module (PCM) includes logic to electronically
prevent powertrain overspeed in any transmission selector position.
IDLE METER
Your vehicle may be equipped with an idle meter to indicate how much
time the vehicle is idling in P (Park) or N (Neutral). The meter is
incorporated with the vehicle odometer. Pressing the odometer-reset
button once will display the trip odometer (miles followed by a "T" for
trip odometer). Pressing the odometer-reset button a second time will
display the idle meter (hours followed by an "h"for hours). The idle
meter only accumulates time when the vehicle is in P (Park) or N
(Neutral). Displayed time is cumulative for the vehicle. It cannot be reset
to zero.
Police/Fleet vehicles often experience long periods of idling, during
which engine oil will continue to break down but mileage is not
accumulated on the odometer.
To assist fleet managers in maintaining proper oil change intervals, the
idle meter will help determine when an oil change is required. For every
hour that the vehicle idles, it has accumulated the equivalent of
approximately 33 miles (53 km) of driving. Using the combination of the
vehicle odometer and idle meter allows the fleet manager to better
determine when the oil needs to be changed.
Example: When the odometer has accumulated 3,000 miles (4,828 km)
and the idle meter shows 61 hours, a 5,000 mile (8047 km) oil change
interval will have been reached: 3,000 road miles + (61 idle hours x
33 miles/idle hour) = 5,013 miles. In metric units this calculation would
be 4,828 kilometers + (61 idle hours x 53 km/idle hour) = 8,061 km.
2011 Crown Victoria (cro)
Owners Guide, 3rd Printing
USA (fus)
Crown Victoria Severe Duty
(Overdrive). Operation in the overdrive
271