Ford 2005 F250 Owner's Manual page 292

Maintenance and Specifications
Item
Automatic
transmission
TorqShift
(5–speed)
Windshield
washer fluid
1
Add 8 oz.(236 ml) of Additive Friction Modifier XL-3 or equivalent
meeting Ford specification EST-M2C118-A for complete refill of limited
slip axles. Ford design rear axles contain a synthetic lubricant that does
not require changing unless the axle has been submerged in water. Dana
rear axles also contain a synthetic lubricant but do require a change.
Refer to your scheduled maintenance information for change intervals
on Dana rear axles.
2
Ensure the correct automatic transmission fluid is used. Transmission
fluid requirements are indicated on the dipstick handle. Check the
container to verify the fluid being added is of the correct type. Refer to
your scheduled maintenance information to determine the correct
service interval.
MERCON , MERCON V and MERCON SP are not
interchangeable. DO NOT mix MERCON , MERCON V and
MERCON SP. Use of dual usage fluids in an automatic
transmission application requiring MERCON SP may cause
transmission damage. Use of a transmission fluid other than the
recommended fluid may cause transmission damage.
292
Ford part name
or equivalent
Motorcraft
MERCON SP
2
ATF
Motorcraft
Premium
Windshield
Washer
Concentrate
Ford part
number
XT-6–QSP
ZC-32–A
Ford
specification
MERCON SP
WSB-M8B16–A2