FORD 2011 F-550 v.3 - Manual (Page 393)

Low fluid level
Type A
Type B
Do not drive the vehicle if the fluid level is at the bottom of the dipstick
and the ambient temperature is above 50°F (10°C).
Correct fluid level
For vehicles equipped with 5-speed transmissions, the fluid should be
checked at normal operating temperature 150°F-170°F (66°C-77°C) on a
level surface. For vehicles equipped with 6-speed transmissions, the fluid
should be checked at normal operating temperature 180°F-200°F
(82°C-93°C) on a level surface. The normal operating temperature can
be reached after approximately 20 miles (30 km) of driving.
Type A
Type B
For vehicles equipped with 5-speed transmissions, the transmission fluid
should be in this range if at normal operating temperature (150°F-170°F
[66°C-77°C]). For vehicles equipped with 6-speed transmissions, the
transmission fluid should be in this range if at normal operating
temperature (180°F-200°F [82°C-93°C]).
ADD COLD HOT DO NOT ADD
ADD COLD HOT DO NOT ADD
Maintenance and Specifications
393
2011 F-250/350/450/550 (f23)
Owners Guide, 3rd Printing
USA (fus)