2008 FORD SUPER DUTY tow

F-Super Duty vehicles (6.4L engine):
•An engine block heater must be used at temperatures below
–10°F (–23°C).
•Use the same engine oil and filter change intervals when using
synthetic engine oil.
•Heavier 15W–40 and 5W–40 engine oils are recommended for
temperature over 50°F (10°C) and must be used for heavy duty
driving and trailer towing.
A symbol has been developed by the
American Petroleum Institute (API)
to help you select the proper engine
oil. It will be included on the oil
container you purchase. The top
section of the symbol shows the oil
performance by the API designation.
This should match the owner guide recommendation. The center section
will show the SAE viscosity grade
Changing engine oil and filter
Change your oil and filter according to thescheduled maintenance
informationin this supplement. Change more frequently if your vehicle
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Maintenance and Specifications
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operation includes extended periods of idling or low-speed operation,
driving for a long time in cold temperatures or driving short distances.
See the following sectionEngine lubrication for severe service
operationfor all severe duty restrictions.
Refer toMotorcraft Part Numberslater in this chapter for the engine oil
filter part number. This filter protects your engine by filtering harmful,
abrasive or sludge particles and particles significantly smaller than most
available “will-fit” filters.
To replace the filter,
1. Unscrew the oil filter cap and wait a few seconds for the oil to drain
through the built-in drain valve.Note:The filter should be changed
before reinstalling the oil pan drain plug.
2. Reinstall and tighten the oil filter cap.
Do not handle a hot oil filter with bare hands.
Continuous contact with USED motor oil has caused cancer in
laboratory mice. Protect your skin by washing with soap and
water.
Engine lubrication for severe service operation
The following severe service operating conditions require unique engine
maintenance procedures:
•frequent or extended idling (over 10 minutes per hour of normal
driving).
•if vehicle is operated in sustained ambient temperatures below -10°F
(-23°C) or above 100°F (38°C)
•frequent low speed operation, consistent heavy traffic less than 25
mph (40 km/h)
•operating in severe dust conditions.
•towing a trailer over 1,000 miles (1,600 km)
•sustained, high speed driving at Gross Vehicle Weight Rating
(maximum loaded weight for vehicle operation)
If you are operating your vehicle under any of these conditions, change
engine oil and filter every 5,000 miles (8,000 km).
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•F-Super Duty air filter:
1. Release and flip the toggle clamps
back.
2. Back the auxiliary tube away from
the housing (or pull it off, if
necessary), remove the top of the
air filter housing, then push the top
half of the filter toward the engine;
this will pop the bottom half free of
the ridge at the bottom of the air
filter box.
3. Pull up on the filter element to remove it.
4. When installing the new filter, make sure the bottom half engages the
ridge at the bottom of the air filter box first, then push the top half
down and back. If not installed properly, the top of the air filter assembly
will not close. Push the auxiliary tube back on (or re-install it, if
removed).
When servicing the air filter, always be sure that the auxiliary
hose is not kinked or obstructed and that it is placed back into
the hole in the front cowl near the back of the headlamp. Check
all hose and wiring positions. Failure to do so may result in
severe engine damage when driving through deep water and/or
encountering unusually heavy precipitation conditions.
DIESEL EXHAUST SYSTEM: OXIDATION CATALYST/DIESEL
PARTICULATE FILTER SYSTEM (F-SUPER DUTY ONLY)
Your vehicle is equipped with a diesel particulate filter (DPF), which is
coupled to a diesel oxidation catalyst, that reduces the amount of
harmful exhaust emitted from the tailpipe. As soot gathers in the system
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Motorcraft Premium Gold Engine Coolant change interval (F-Super Duty)
❑6 years or 100,000 miles (160,000 km) - change Motorcraft Premium Gold Engine Coolant (whichever comes first)❑After initial change - change Motorcraft Premium Gold Engine Coolant every 3 years or 50,000 miles (80,000 km)
Check every month
❑Check function of all interior and exterior lights❑Check tires for wear and adjust air pressure (including spare tire)
❑Check that holes in the tail-pipe of the exhaust system are clear of debris-the holes/slots are functional (F-Super Duty)
❑Check engine oil level
❑Check windshield washer fluid level
❑Check and drain fuel filter/water separator
Check every six months
❑Check lap/shoulder belts and seat latches for wear and function❑Check that externally-mounted spare tire is tight (seeOwner’s Guide)
❑Check power steering fluid level
❑Check washer spray, wiper operation and clean all wiper blades (replace as necessary)
❑Check parking brake for proper operation
❑Check and lubricate all hinges, latches and outside locks
❑Check and lubricate door rubber weatherstrips
❑Check and clean body and door drain holes
❑Check safety warning lamps (brake, ABS, air bag, safety belt) for operation
❑Check cooling system fluid level and coolant strength (E-Series)
❑Check engine and fuel cooling systems for fluid level and coolant strength (F-Super Duty)
❑Check battery connections and clean if necessary
❑Check clutch fluid level, if equipped
Retightening lug nuts
❑On vehicles equipped with single rear wheels, retighten the lug nuts to the specified torque at 500 miles (800 km) after
any wheel disturbance (tire rotation, changing a flat tire, wheel removal, etc.).
❑On vehicles equipped with dual rear wheels, retighten the wheel lug nuts to the specified torque at 100 miles (160 km),
and again at 500 miles (800 km) of new vehicle operation and after any wheel disturbance (tire rotation, changing a flat
tire, wheel removal, etc.).
❑Refer toWheel Lug Nut Torque Specificationin yourOwner’s Guidefor the proper lug nut torque specification.
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Scheduled Maintenance: General Information
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SPECIAL OPERATING CONDITIONS
Towing a trailer or using a camper or car-top carrier
Every 5,000 miles (8,000 km) or 6
monthsChange engine oil and replace filter
Every 5,000 miles (8,000 km)Check air filter restriction gauge (replace air filter as
required or when air filter restriction gauge indicates)
Every 10,000 miles (16,000 km) or
400 hours of engine operation
(whichever comes first)Change engine-mounted fuel filter and chassis-mounted
(FCM) fuel filter
Extensive idling and/or low-speed driving for long distances as in heavy
commercial use such as delivery, taxi, patrol or livery
Every 5,000 miles (8,000 km), 3
months or 200 hours of engine
operation (whichever comes first) if
vehicle is used for stationary
operationChange engine oil and replace filter
Every 5,000 miles (8,000 km), 6
months or 200 hours of engine
operation (whichever comes first)Change engine oil and replace filter
Every 5,000 miles (8,000 km)Check air filter restriction gauge (replace air filter as
required or when air filter restriction gauge indicates)
Inspect brake system
Inspect and lubricate steering and suspension ball joints
Every 10,000 miles (16,000 km) or
400 hours of engine operation
(whichever comes first)Change engine-mounted fuel filter and chassis-mounted
(FCM) fuel filter
30,000 miles (48,000 km) and
90,000 miles (144,000 km)Lubricate 4x2 wheel bearings. Replace wheel bearing
grease seal.
As requiredReplace cabin air filter, if equipped
Note:For vehicles that operate under severe service conditions such as
frequent or extended idle (over 10 minutes per hour of normal driving),
maintenance requirements need to be adjusted. This needs to be
considered when determining vehicle service intervals.
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Off-road operation
Every 5,000 miles (8,000 km)Check air filter restriction gauge (replace air filter as
required or when air filter restriction gauge indicates)
Inspect and rotate tires (if required)
Inspect brake system pads and rotors
Lubricate front axle u-joints (4x4 only)
Every 5,000 miles (8,000 km) or 6
monthsChange engine oil and replace filter
Every 10,000 miles (16,000 km) or
400 hours of engine operation
(whichever comes first)Change engine-mounted fuel filter and chassis-mounted
(HFCM) fuel filter
Every 50,000 miles (80,000 km)Check front axle lubricant (4x4 only)
Change rear axle lubricant (F–450 and F–550 only)
Every 60,000 miles (96,000 km)Change transfer case fluid (4x4 only)
As requiredInspect and lubricate steering and suspension ball joints
and tie rod ends (if equipped with zerk fittings)
Check that the functional holes in each leg of the twin tip
and the holes under the shield just inboard of the right
rear tire are kept clean/clear of debris or foreign materials
(clean/remove debris as required). Refer to the
Cleaningchapter for more information.
Towing a trailer or using a camper or car-top carrier
Every 5,000 miles (8,000 km)Check air filter restriction gauge (replace air filter as
required or when air filter restriction gauge indicates)
Inspect and rotate tires (if required)
Inspect brake system pads and rotors
Every 5,000 miles (8,000 km) or 6
monthsChange engine oil and replace filter
Every 10,000 miles (16,000 km) or
400 hours of engine operation
(whichever comes first)Change engine-mounted fuel filter and chassis-mounted
(HFCM) fuel filter
Every 60,000 miles (96,000 km)Change transfer case fluid (4x4 only)
As requiredChange manual transmission fluid
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Scheduled Maintenance: F-Super Duty
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EXCEPTIONS
In addition, there are several exceptions to the Normal Schedule. They
are listed below:
Normal Vehicle Axle Maintenance
❑Rear axles and power take-off (PTO) units containing synthetic lubricant and light duty trucks equipped with Ford-design axles
are lubricated for life. These lubricants are not to be checked or changed unless a leak is suspected, service is required or
the axle assembly has been submerged in water. The axle and PTO lubricant should be changed anytime the axle and PTO
have been submerged in water. Non-synthetic rear axle lubricants should be replaced every 3,000 miles (5,000 km) or 3
months, whichever occurs first, during extended trailer tow operation above 70°F (21°C) ambient and wide open throttle for
extended periods above 45 mph (72 km/h). The 3,000 mile (5,000 km) lube change interval may be waived if the axle
was filled with 75W140 synthetic gear lubricant meeting Ford specification WSL-M2C192-A, part number F1TZ-19580-B or
equivalent. Add four ounces (118 mL) of additive friction modifier C8AZ-19B546-A (EST-M2C118-A) or equivalent for com-
plete refill of Traction-Lok rear axles. The axle lubricant should be changed anytime an axle has been submerged in water.
E-450, F-450 and F-550 Axle Maintenance
❑Replace rear axle lubricant every 100,000 miles (160,000 km) under normal driving conditions on all F-450 and F-550
commercial applications. For F-450 and F-550 trucks operated at or near maximum Gross Vehicle Weights, the rear axle
lubricant should be replaced every 50,000 miles (80,000 km). In addition, this 50,000 mile (80,000 km) schedule should
be observed when the vehicles are operated under the Special Operating Conditions, where noted.
Diesel Particulate Filter (DPF) (F-Super Duty only)
❑The DPF may need to be removed for ash cleaning at approximately 120,000 miles (193,000 km) or greater (actual mile-
age can vary greatly depending upon engine/vehicle operating conditions) and replaced with a new or remanufactured (ash
cleaned) part. The filter may need to be replaced at approximately 250,000 miles (400,000 km) depending upon engine/
vehicle operating conditions. In both cases the engine control system will set a service light (
) to inform you to
bring the vehicle to the dealer for service. If there are any issues with the oxidation catalyst/DPF system a service light
(
or) will be set by the engine control system to inform you to bring the vehicle into a dealership for
service.
Biodiesel (E-Series only)
❑Biodiesel may be blended with petroleum-based diesel fuel. Such biodiesel blends are designated as BXX, where XX repre-
sents the percentage of pure biodiesel contained within the blend (e.g., B5, B20, and B100). To maintain the desired level
of performance and longevity of the engine, vehicles using biodiesel up to and including B5 should change the engine oil
and filter every 5,000 miles (8,000 km) or 200 hours of engine operation (whichever comes first).
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Scheduled Maintenance: Special Information
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