* 4R70W (4-speed automatic): This is the more common transmission. The capacity is typically around 12-13 quarts. However, it's crucial to check your owner's manual for the exact specification as slight variations can exist. Always use the correct transmission fluid specified by Ford.
* 5R55E (5-speed automatic): This was a less common option, possibly in higher trim levels or specific configurations. The capacity for this transmission is slightly higher, often around 14-15 quarts. Again, consult your owner's manual for the precise amount.
To find the exact capacity for *your* 1999 Ford Expedition:
1. Locate your owner's manual: This will provide the most accurate information.
2. Check the transmission dipstick: The dipstick may indicate the correct capacity (though it might only show the "fill" level).
3. Consult a Ford repair manual: A repair manual specific to your vehicle year and model will detail the proper transmission fluid capacity.
Never rely solely on general online information. Always double-check with your owner's manual or a reputable source before adding transmission fluid. Using the incorrect amount of fluid can damage your transmission.
