Page 33 of 57

SPECIAL OPERATING CONDITIONS
However, if one or more of the Special Operating Conditions outlined
below better describes how you typically operate your vehicle, you will
need to perform some maintenance services more often than the Normal
Schedule recommends.
•Towing a trailer or carrying heavy loads
•Extensive idling and/or driving at low-speeds for long distances
•Driving in dusty conditions
•Off-road operation
•Use of E85 fuel 50% of the time or greater (flex fuel vehicles only)
Important:For further details and information regarding these Special
Operating Conditions see page 53.
EXCEPTIONS
Some exceptions for specific vehicles and special applications are
outlined below. In addition, you will find further information under
Exceptionson page 56.
•Engine oil and engine coolant - time and mileage based interval
If you’re unsure which maintenance schedule to follow, ask your Ford
and Lincoln Mercury Dealership, or visit the Maintenance area of
www.genuineservice.com.
OILS, FLUIDS AND FLUSHING
In many cases, fluid discoloration is a normal operating characteristic
and, by itself, does not necessarily indicate a concern or that the fluid
needs to be changed. However, discolored fluids that also show signs of
overheating and/or foreign material contamination should be inspected
immediately by a qualified expert such as the factory-trained technicians
at your Ford or Lincoln Mercury Dealership. Your vehicle’s oils and fluids
should be changed at the specified intervals or in conjunction with a
repair. Flushing is a viable way to change fluid for many vehicle
sub-systems during scheduled maintenance. It is critical that systems are
flushed only with new fluid that is the same as that required to fill and
operate the system, or using a Ford-approved flushing chemical.
Scheduled Maintenance Guide
33
2010 F-150(f12)
Supplement, 1st Printing
USA(fus)
Page 53 of 57

ITEMS NEEDING SPECIAL ATTENTION
If you operate your Ford/Lincoln/Mercury vehicleprimarilyin one of the
more demandingSpecial Operating Conditionslisted below, you will
need to have some items maintained more frequently. If you only
occasionallyoperate your vehicle under these conditions, it is not
necessary to perform the additional maintenance. For specific
recommendations, see your Ford or Lincoln Mercury Dealership Service
Advisor or Technician.
Towing a trailer or using a camper or car-top carrier
Every 60,000 milesChange transfer case fluid
Extensive idling and/or low-speed driving for long distances
Inspect frequently, service as
requiredReplace cabin air filter
Every 200 hours of useChange engine oil
Every 5,000 milesInspect brake system
Lubricate control arm and steering ball joints if equipped
with zerk fittings
Every 60,000 milesReplace spark plugs
Change transfer case fluid
Operating in dusty conditions such as unpaved or dusty roads
Inspect frequently, service as
requiredReplace engine air filter
Replace cabin air filter (if equipped)
Every 5,000 miles or 6 monthsInspect and lubricate U-joints
Every 60,000 milesChange transfer case fluid
Scheduled Maintenance Guide
53
2010 F-150(f12)
Supplement, 1st Printing
USA(fus)
Page 56 of 57

In addition, there are several exceptions to the Normal Schedule. They
are listed below:
Current mileage goes here =>
Add 45,000 miles to the current miles + 45,000
Next change due at this mileage =>
Or
Today’s date goes here =>
Add 3 years + 00 / 00 / 03
Date of next change =>
whichever comes firstDealer Stamp
P & A CODE
R.O.#
Current mileage goes here =>
Add 45,000 miles to the current miles + 45,000
Next change due at this mileage =>
Or
Today’s date goes here =>
Add 3 years + 00 / 00 / 03
Date of next change =>
whichever comes firstDealer Stamp
P & A CODE
R.O.#
Normal Vehicle Axle Maintenance
❑Rear axles 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. During extended trailer tow operation above 70°F ambient and wide open throttle for extended periods above
45 mph, non-synthetic rear axle lubricants should be replaced every 3,000 miles or 3 months, whichever occurs first. The
3,000 mile 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 friction modifier C8AZ-19B546-A (EST-
M2C118-A) or equivalent for complete refill of Traction-Lok rear axles (see
Owner’s Guidefor quantity). The axle lubricant
should be changed anytime an axle has been submerged in water.
California Fuel Filter Replacement
❑If vehicle is registered in California, the California Air Resources Board has determined that the failure to perform this main-
tenance item will not nullify the emission warranty or limit recall liability prior to the completion of the vehicle’s useful life.
Ford Motor Company, however, urges you to have all recommended maintenance services performed at the specified inter-
vals and to record all vehicle service.
Scheduled Maintenance Guide
56
2010 F-150(f12)
Supplement, 1st Printing
USA(fus)