Ford 2009 Mountaineer Owner's Manual page 555

Driver Controls
4. The compass is now calibrated.
Oil life Setup and Start Value
To reset the oil monitoring system to 100% after each oil change
[approximately 7,500 miles (12,000 km) or six months] perform the
following:
1. Press RESET control to display
"HOLD RESET IF NEW OIL".
2. Press and hold the RESET
control for more than two seconds.
Oil life is set to 100% and "OIL
CHANGE SET TO 100%" is
displayed.
Note: To change oil life 100% miles
value from 7,500 miles (12,000 km)
or six months to another value,
proceed to Step 3.
3. Once "OIL LIFE SET TO XXX%"
is displayed, release and press the
RESET control switch to change the
Oil Life Start Value. Each release
and press will reduce the value by
10 percent.
Note: Oil Life Start Value of 100%
equals 7,500 miles (12,000 km) or
six months. For example, setting Oil Life Start Value to 60% sets the Oil
Life Start Value to 3,000 miles (4,800 km) and 120 days.
131
2009 Mountaineer (mnt)
Owners Guide, 2nd Printing
USA (fus)