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Shift according to the following shift speed charts:
Upshifts when accelerating (recommended for best fuel economy)
6-speed transmission
Shift from: Transfer case position
1
(if equipped)
2H or 4H 4L
LO-1 5 mph (8 km/h) 2 mph (3 km/h)
1-2 14 mph (23 km/h) 6 mph (10 km/h)
2-3 22 mph (35 km/h) 9 mph (14 km/h)
3-4 30 mph (48 km/h) 12 mph (19 km/h)
4
-
D
(Overdrive)
40 mph (64 km/h) 15 mph (24 km/h)
Maximum downshift speeds
1
6-speed transmission
Shift from: Transfer case position (if equipped)
2
2H or 4H 4L
D
(Overdrive) -
4
45 mph (72 km/h) 16 mph (26 km/h)
4-3 35 mph (56 km/h) 12 mph (19 km/h)
3-2 20 mph (32 km/h) 8 mph (13 km/h)
2-1 5 mph (8 km/h) 2 mph (3 km/h)
1-LO Only shift to LO when at a stop.
1
Use 2H or 4H for 4WD equipped vehicles.
2
Downshift at lower speeds when driving on slippery surfaces.
Reverse
1. Make sure that your vehicle is at a complete stop before you shift into
R (Reverse). Failure to do so may damage the transmission.
2. Move the gearshift lever into the neutral position and wait at least
three seconds before shifting into R (Reverse).
Note: The gearshift lever can only be moved into R (Reverse) by moving
it from left of 3 (Third) and 4 (Fourth) before shifting into R (Reverse).
This is a lockout feature that protects the transmission from accidentally
being shifted into R (Reverse) from D (Overdrive).
Driving
279
2010 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)