2005 Ford F150 Owner Guide 5th Printing - Page 297

Maintenance and Specifications 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 Cubic inches Required fuel Firing order Ignition system Spark plug gap Compression ratio 1 4.2L V6 engine 256 87 octane 1-4-2-5-3-6 EDIS 0.052-0.056 inch (1.32-1.42mm) 9.3:1 4.6L V8 engine 281 87 octane 1-3-7-2-6-5-4-8 Coil on plug 0.052-0.056 inch (1.32-1.42mm) 9.37:1 5.4L V8 engine 330 87 octane 1-3-7-2-6-5-4-8 Coil on plug 0.040-0.050 inch (1.02-1.28mm)1 9.85:1 The 5.4L 3V spark plug gap CAN NOT be adjusted. 297 2005 F-150 (f12) Owners Guide (post-2002-fmt) USA (fus)