Ford Mustang Owner's Manual page 339

SPECIAL OPERATING CONDITIONS – 3.7L AND 5.0L ENGINES
If you operate your vehicle primarily in any of the following conditions,
you need to perform additional maintenance as indicated. If you
occasionally operate your vehicle under any of these conditions, it is
not necessary to perform the additional maintenance. For specific
recommendations, see your dealership service advisor or technician.
Towing a trailer or using a camper or car-top carrier
As required Change engine oil and filter as indicated by
message center and perform services listed in
Normal Scheduled Maintenance chart
Inspect frequently, Inspect and lubricate U-joints
service as required
See axle maintenance items under Exceptions
Every 60,000 miles Change manual transmission fluid
(96,000 km)
Perform the services in the preceding table when specified or within
3,000 miles (4,800 km) of the OIL CHANGE REQUIRED message
appearing in the message center.
Example #1: The OIL CHANGE REQUIRED message comes on at
28,751 miles (46,270 km); perform the 30,000 mile (48,000 km)
automatic transmission fluid replacement.
Example #2: The OIL CHANGE REQUIRED message has not come on
but the odometer reads 30,000 miles (48,000 km); perform the engine air
filter replacement. (i.e., Intelligent Oil Life Monitor™ was reset at
25,000 miles [40,000 km].)
Extensive idling and/or low-speed driving for long distances as
in heavy commercial use (i.e. delivery, taxi, patrol car or livery)
As required Change engine oil and filter as indicated by
message center and perform services listed in
Normal Scheduled Maintenance chart
Inspect frequently, Replace cabin air filter (if equipped)
service as required
Replace engine air filter
Every 60,000 miles Replace spark plugs
(96,000 km)
Perform the services in the preceding table when specified or within
3,000 miles (4,800 km) of the OIL CHANGE REQUIRED message
appearing in the message center.
2012 05+ Mustang (197)
Owners Guide, 3rd Printing
USA (fus)
Scheduled Maintenance
339