FORD F-250 - Manual (Page 18)

Never remove the coolant reservoir cap while the engine is
running or hot.
This gauge indicates the temperature of the engine coolant, not the
coolant level. If the coolant is not at its proper level the gauge indication
will not be accurate.
Odometer
Registers the total kilometers
(miles) of the vehicle.
Trip odometer
Registers the kilometers (miles) of
individual journeys. To reset,
depress the control.
0
0 0 0 0
0 0 0 0 0
MPH
20
km/h
40
60
80
100
120
140
160
0
10
20
30
40
50 60
70
80
90
100
Instrumentation
18