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correct type. Refer to your scheduled maintenance information 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
Cubic inches 256 281 330
Required fuel 87 octane 87 octane 87 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
Ignition system EDIS Coil on plug Coil on plug
Spark plug gap
0.052–0.056 inch
(1.32–1.42mm)
0.052–0.056 inch
(1.32–1.42mm)
0.040–0.050 inch
(1.02–1.28mm)
1
Compression
ratio
9.3:1 9.37:1 9.85:1
1
The 5.4L 3V spark plug gap CAN NOT be adjusted.
2005 F-150 (f12)
Owners Guide (post-2002-fmt)
USA (fus)
Maintenance and Specifications
297