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Scheduled Maintenance Guide
EXCEPTIONS
In addition, there are several exceptions to the Normal Schedule. They
are listed below:
❑
Rear axles and power take-off (PTO) units containing synthetic fluid and light duty trucks equipped with Ford-design axles
are lubricated for life. These fluids 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 fluids should be changed anytime the axle and PTO have
been submerged in water. Non-synthetic rear axle fluids should be changed every 3,000 miles (4,800 km) or three
months, whichever comes 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 (4,800 km) fluid change interval may be waived if the
axle was filled with 75W140 synthetic gear fluid 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 fluid should be changed anytime an axle has been submerged in water.
❑
Change rear axle fluid every 100,000 miles (160,000 km) under normal driving conditions on all commercial applications.
For trucks operated at or near maximum Gross Vehicle Weights, the rear axle fluid should be changed 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.
❑
The DPF may need to be removed for ash cleaning at approximately 120,000 miles (192,000 km) or greater (actual
mileage 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 (
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
for service.
ENGINE COOLANT CHANGE RECORD
❑
Initial change – 6 years or 105,000 miles (168,000 km) (whichever comes first), or as indicated from the coolant tests
for concentration (freeze-point) or additive strength (corrosion inhibitor)
❑
After initial change – every 3 years or 45,000 miles (72,000 km), or as indicated from the coolant tests for concentration
(freeze-point) or additive strength (corrosion inhibitor)
92
2011 Diesel (eco)
Supplement, 5th Printing
USA (fus)
Normal vehicle axle maintenance
F-450 and F-550 axle maintenance
Diesel Particulate Filter (DPF)
) will be set by the engine control system to inform you to bring the vehicle into a dealership
Engine coolant
) to inform
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