Ford Crown Victoria 2011 Owner's Manual page 314

Scheduled Maintenance
Every 15,000 miles
(24,000 km)
Every 30,000 miles
(48,000 km)
Every 105,000 miles
(168,000 km)
Every 150,000 miles
(240,000 km)
1
Initial replacement at 105,000 miles (168,000 km) or 72 months; every
45,000 miles (72,000 km) or 36 months thereafter
2
Perform a follow-up inspection at 120,000 miles (192,000 km)
314
2011 Crown Victoria (cro)
Owners Guide, 3rd Printing
USA (fus)
Replace cabin air filter (if equipped)
Replace climate-controlled seat filter (if
equipped)
Replace engine air filter
Replace fuel filter (Crown Victoria, Grand
Marquis and Town Car)
1
Change engine coolant
Replace spark plugs
Inspect accessory drive belt(s)
Change automatic transmission fluid and filter
(filter not required on 6F35, 6F50, DPS6 and
AWF-21 transmissions); consult dealer for
requirements
Change manual transmission fluid
Change rear axle fluid (RWD vehicles)
Replace accessory drive belt(s) if not replaced
within the last 100,000 miles (160,000 km)
Replace timing belt (Fiesta); failure to replace
belt can cause internal engine damage
2