2015 Ford Expedition EL Owner Manual Printing 1 - Page 551

550 Scheduled Maintenance Extensive idling or low-speed driving for long distances as in heavy commercial use (such as delivery, taxi, patrol car or livery) As required Change engine oil and filter as indicated by the information display and perform services listed in the Normal Scheduled Maintenance chart. Inspect frequently, Replace engine air filter. service as required Every 60000 miles Replace spark plugs. (96000 km) Change transfer case fluid (Four-wheel drive vehicles). Operating in dusty or sandy conditions such as unpaved or dusty roads Inspect frequently, Replace engine air filter. service as required Every 5000 miles Inspect the wheels and related components for (8000 km) abnormal noise, wear, looseness or drag. Rotate tires, inspect tires for wear and measure tread depth. Change engine oil and filter.* Every 5000 miles (8000 km) or six months Every 60000 miles Change transfer case fluid (Four-wheel drive (96000 km) vehicles). Reset your Intelligent Oil-Life Monitor after each engine oil and filter change. See the Instrument Cluster chapter. *