Automatic Transmission Fluid - Ford F series Owner's Manual

Automatic Transmission Fluid

Your vehicle does not use up transmisison fluid.
However it is recommended that you check the
transmission fluid at least twice a year. If the
transmission is not working properly — for
instance, the transmission may slip or shift
slowly, or if you notice some sign of fluid
leakage — the fluid level should be checked.
NOTE: For E4OD transmissions, there is no
30,000 mile (48,000 km) sheduled
transmission fluid change requirement.
Severe Operating Conditions
Transmission fluid, filter and seal assembly
should be changed every 21,000 miles
(34,000 km) only under any of the following
conditions.
Extended periods of high speed driving
during hot weather at/or above +90˚F
(+30˚C).
Towing a trailer for distances over 1,000 miles
(1,600 km) per trip.
Accumulating 5,000 miles (8,000 km) or more
per month.
Continuous operation and/or extensive idling
(a delivery service as an example).
Operating in severe dust conditions.
NOTE: Use of a transmission fluid other than
specified could result in transmission
malfunction and/or failure. Refer to
"Adding automatic transmission fluid",
"Refill capacities" and "lubricant
specifications" for further information.
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