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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 – Inspect wheels and related components for abnormal 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 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 (except 6R80 transmission) Every 60,000 miles (96,000 km) – Replace spark plugs Scheduled Maintenance 319 2011 Crown Victoria (cro) |