2002 Ford F350 Owner Guide 5th Printing - Page 240

Maintenance and Specifications Traction-Lok 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 "Service Guide" for change intervals on Dana rear axles. 2 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 Cubic inches Required fuel Firing order Spark plug gap Ignition system Compression ratio 5.4L V8 engine 330 87 octane 1-3-7-2-6-5-4-8 1.3-1.4 mm (0.052-0.056 inch) Coil on plug 9.0:1 6.8L V10 engine 415 87 octane 1-6-5-10-2-7-3-8-4-9 1.3-1.4 mm (0.052-0.056 inch) Coil on plug 9.0:1 240