Off-road operation
Inspect steering linkage, ball joints and U-joints, Lubricateif equipped with grease fittings.Inspect frequently, serviceas required
Replace engine air filter.
Change engine oil and filter.Every 5000 miles (8000km) or six monthsInspect the wheels and related components for abnormalnoise, wear, looseness or drag.
Rotate tires*, inspect tires for wear and measure treaddepth.
Replace front wheel bearing grease and grease seals ifnon-sealed bearings are used.Every 30000 miles (48000km)
Change rear axle fluid (F-450 and F-550 only).Every 50000 miles (80000km)
Change transfer case fluid (Four-wheel drive vehicles).Every 60000 miles (96000km)
*Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheelsonly if unusual wear is noted.
Exclusive use of E85 (Flex fuel vehicles only)
If ran exclusively on E85, fill the fuel tank full with regularunleaded fuel.Every oil change interval
6.7L Diesel Engine
See the diesel supplement for specialoperating condition information.
Exceptions
There are several exceptions to the NormalSchedule:
Axle Maintenance
Change the axle fluid anytime an axle issubmerged in water.
Rear axles and power take-off units withsynthetic fluid and light-duty trucksequipped with Ford-design axles arelubricated for life; do not check or changefluid unless a leak is suspected, service isrequired or the assembly has beensubmerged in water. During long periodsof trailer towing with outside temperaturesabove 70°F (21°C) and at wide-openthrottle for long periods above 45 mph (72km/h), change non-synthetic rear axle fluidevery 3000 miles (4800 kilometers) orthree months, whichever comes first. Thisinterval can be waived if the axle is filledwith 75W140 synthetic gear fluid meeting
447Super Duty (), enUSAScheduled Maintenance
Ford specification WSL-M2C192-A, partnumber F1TZ-19580-B, or equivalent. Addfriction modifier XL-3 (EST-M2C118-A) orequivalent for complete refill ofTraction-Lok rear axles. See Capacitiesand Specifications (page 301).
Additional Axle Maintenance for F-450and F-550
Change rear axle fluid every 100000 miles(160000 kilometers) under normal drivingconditions on all commercial applications.When operating your vehicle at or nearmaximum gross vehicle weights, changethe rear axle fluid every 50000 miles(80000 kilometers). In addition, followthis 50000-mile (80000-kilometer)schedule when operating your vehicleunder the special operating conditions,where noted.
California Fuel Filter Replacement
If you register your vehicle in California, theCalifornia Air Resources Board hasdetermined that the failure to perform thismaintenance item does not nullify theemission warranty or limit recall liabilitybefore the completion of your vehicle'suseful life. Ford Motor Company, however,urges you to have all recommendedmaintenance services performed at thespecified intervals and to record all vehicleservice.
Hot Climate Oil Change Intervals
Vehicles operating in the Middle East,North Africa, Sub-Saharan Africa orlocations with similar climates using anAmerican Petroleum Institute (API)Certified for Gasoline Engines (Certificationmark) oil of SM or SN quality, the normaloil change interval is 3000 miles (5000kilometers).
If the available API SM or SN oils are notavailable, then the oil change interval is1800 miles (3000 kilometers).
Engine Air Filter and Cabin Air FilterReplacement
The life of the engine air filter and cabin airfilter is dependent on exposure to dustyand dirty conditions. Vehicles operated inthese conditions require frequentinspection and replacement of the engineair filter and cabin air filter.
Diesel Particulate Filter
The filter may need to be removed for ashcleaning at approximately 120000 miles(192000 kilometers) or greater (actualmileage can vary greatly depending uponengine and vehicle operating conditions)and replaced with a new orre-manufactured (ash cleaned) part. Thefilter may need to be replaced atapproximately 250000 miles (400000kilometers) depending upon engine andvehicle operating conditions. In both cases,the engine control system sets a servicelight (wrench icon) to inform you to bringyour vehicle to the dealer for service. Ifthere are any issues with the oxidationcatalyst or particulate filter system, aservice light (wrench or engine icon) setsby the engine control system to inform youto bring your vehicle into a dealer forservice.
448Super Duty (), enUSAScheduled Maintenance
