Ford 2010 E-150 Owner's Manual page 300

Maintenance and Specifications
The transmission fluid should be in this range if at normal operating
temperature (150°F-170°F [66°C-77°C]).
The transmission fluid should be in this range if at ambient temperature
(50°F-95°F [10°C-35°C]).
300
2010 Econoline (eco)
Owners Guide, 1st Printing
USA (fus)
ADD COLD HOT DO NOT ADD
DON'T ADD IF IN CROSSHATCHED AREA • CHECK WHEN HOT
ADD COLD HOT DO NOT ADD
IDLING IN PARK