FORD 2011 Crown Victoria v.2 - Manual (Page 313)

Every 15,000 miles
(24,000 km) Replace cabin air filter (if equipped)
Every 30,000 miles
(48,000 km) Replace climate-controlled seat filter (if
equipped)
Replace engine air filter
Replace fuel filter (Crown Victoria, Grand
Marquis and Town Car)
Every 105,000 miles
(168,000 km) Change engine coolant 1
Replace spark plugs
Inspect accessory drive belt(s) 2
Every 150,000 miles
(240,000 km) 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
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)
Scheduled Maintenance Guide
313
2011 Crown Victoria (cro)
Owners Guide, 2nd Printing
USA (fus)