1998 Ford Expedition Owner Guide 1st Printing - Page 165

Maintenance and care Capacities and specifications chapter. An overfill condition of transmission fluid may cause shift and/or engagement concerns and/or possible damage. Do not drive the vehicle if the fluid level is below the hole at the bottom of the blade type dipstick (4R70W transmission) or below the COLD area on the bullet type dipstick (E4OD transmission) and outside temperatures are above 10°C (50°F) (see figure to the right). Your transmission does not use up fluid. However, it is recommended that you check the transmission fluid at least twice a year. The fluid level should be checked if the transmission is not working properly, i.e., if the transmission slips or shifts slowly or if you notice some sign of fluid leakage. Transmission fluid should be checked at normal operating temperatures 66°C-77°C (150°F-170°F) on a level surface. The normal operating temperature can be reached after approximately 32 km (20 miles) of driving. The transmission fluid should be in this range if at normal operating temperature (66°C-77°C [150°F-170°F]) (see figure to the right). DON'T ADD IF IN CROSSHATCHED AREA • CHECK WHEN HOT IDLING IN PARK ADD COLD HOT DO NOT ADD DON'T ADD IF IN CROSSHATCHED AREA • CHECK WHEN HOT IDLING IN PARK ADD COLD HOT DO NOT ADD 165