2006 Ford F150 Owner Guide 4th Printing - Page 318

Maintenance and Specifications 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 2 4.2L V6 engine 4.6L V8 engine 5.4L V8 engine 256 281 330 87 octane 87 octane 87 octane or Ethanol (E 85)2 1-4-2-5-3-6 1-3-7-2-6-5-4-8 1-3-7-2-6-5-4-8 EDIS Coil on plug Coil on plug 0.052-0.056 inch 0.052-0.056 inch 0.040-0.050 inch (1.32-1.42mm) (1.32-1.42mm) (1.02-1.28mm)1 9.3:1 9.37:1 9.85:1 The 5.4L 3V spark plug gap can't be adjusted. 5.4L 3V FFV engines only. 318 2006 F-150 (f12) Owners Guide (post-2002-fmt) USA (fus)