FORD 2011 Mustang v.2 - Manual (Page 325)

NORMAL SCHEDULED MAINTENANCE AND LOG
For your convenience, your vehicle is equipped with a message center
which determines the proper oil change service interval. You should
perform the engine oil change as indicated by the instrument cluster
message center. The message center will display ENGINE OIL CHANGE
SOON or OIL CHANGE REQUIRED to indicate when an oil change is
needed. The engine oil change service needs to be completed within two
weeks or 500 miles (800 km) after the OIL CHANGE REQUIRED
message is displayed. Your oil change service interval can be up to one
year or 10,000 miles (16,000 km). Reset your Intelligent Oil Life
Monitor™ after each engine oil and filter change; refer to the
Instrument Cluster chapter.
If your message center is prematurely reset or becomes inoperative, you
should perform the oil change interval at six months 5,000 miles
(8,000 km) from your last oil change.
Note: On Shelby
௡ GT500௡ models, your message center is NOT
equipped with this feature. Refer to your Shelby GT 500 supplement for
oil change service intervals.
Scheduled Maintenance Guide
325
2011 05+ Mustang (197)
Owners Guide, 2nd Printing
USA (fus)