2001 Ford F150 Owner Guide 4th Printing - Page 227

Maintenance and care Low fluid level Do not drive the vehicle if the fluid level is at the bottom of the dipstick and the ambient temperature is above 10°C (50°F). DON'T ADD ADD COLD HOT DO NOT ADD Correct fluid level The transmission fluid should be checked at normal operating temperature 66°C-77°C (150°F-170°F) on a level surface. The normal operating temperature can be reached after approximately 30 km (20 miles) of driving. You can check the fluid without driving if the ambient temperature is above 10°C (50°F). However, if fluid is added at this time, an overfill condition could result when the vehicle reaches normal operating temperature. The transmission fluid should be in this range if at normal operating DON'T ADD temperature (66°C-77°C [150°F-170°F]). ADD COLD HOT DO NOT ADD The transmission fluid should be in this range if at ambient temperature (10°C-35°C [50°F-95°F]). DON'T ADD ADD COLD HOT DO NOT ADD 227