Maintenance and specifications – FORD 2003 F-150 v.5 User Manual

Page 261

Traction-Lok axles. Add 236 ml (8 oz.) of Additive Friction Modifier XL-3
or equivalent meeting Ford specification EST-M2C118-A for complete
refill of 10.25 and 10.5 inch Traction-Lok axles.

Ensure the correct automatic transmission fluid is used. Transmission

fluid requirements are indicated on the dipstick or on the dipstick
handle. Check the container to verify the fluid being added is of the
correct type. Refer to your scheduled maintenance guide to determine
the correct service interval.

Some transmission fluids may be labeled as dual usage, such as
MERCON

௡ and MERCON௡ V. These dual usage fluids are not to be used

in an automatic transmission that requires use of the MERCON

௡ type

fluid. However, these dual usage fluids may be used in transmissions that
require the MERCON

௡ V type fluid.

MERCON

௡ and MERCON௡ V type fluids are not interchangeable.

DO NOT mix MERCON

௡ and MERCON௡ V. Use of a transmission

fluid that indicates dual usage (MERCON

௡ and MERCON௡ V) in

an automatic transmission application requiring MERCON

௡ may

cause transmission damage. Use of any fluid other than the
recommended fluid may cause transmission damage.

ENGINE DATA

Engine

4.2L V6
engine

4.6L V8
engine

5.4L V8
engine

5.4L

Supercharged

V8 engine

Cubic
inches

256

281

330

Required
fuel

87 octane

91 octane

Firing
order

1-4-2-5-3-6

1-3-7-2-6-5-4-8 1-3-7-2-6-5-4-8 1-3-7-2-6-5-4-8

Spark plug
gap

1.3-1.4 mm
(0.052-0.056
inch)

Ignition
system

EDIS

Coil on plug

Compression
ratio

9.3:1

9.37:1

9.0:1

2003 F150 (f12)
Owners Guide (post-2002-fmt)
USA English (fus)

Maintenance and Specifications

261