FORD 2011 Crown Victoria v.1 - Manual (Page 317)

Extensive idling and/or low-speed driving for long distances as in heavy
commercial use such as delivery, taxi, patrol car or livery
Inspect frequently, service as
required
– Replace cabin air filter (if equipped).
– Replace engine air filter.
Every 5,000 miles (8,000 km) – Inspect brake system.
– Rotate tires, inspect tires for wear and measure tread
depth.
– Inspect wheels and related components for abnormal
noise, wear, looseness or drag.
– Lubricate control arm and steering ball joints (if
equipped with grease fittings).
Every 5,000 miles (8,000 km) or
6 months
– Inspect and lubricate U-joints.
Every 5,000 miles (8,000 km),
6 months or 200 hours of engine
operation
– Change engine oil and replace oil filter.
Every 15,000 miles (24,000 km) – Replace fuel filter (Crown Victoria, Grand Marquis and
Town Car).
Every 30,000 miles (48,000 km) – Change automatic transmission fluid (not required on
6R80 transmission).
Every 60,000 miles (96,000 km) – Replace spark plugs.
Scheduled Maintenance Guide
317
2011 Crown Victoria (cro)
Owners Guide, 1st Printing
USA (fus)