2015 Ford F450 Super Duty Crew Cab Owner Manual Printing 2 - Page 448

Scheduled Maintenance Extensive idling or low-speed driving for long distances, as in heavy commercial use (such as delivery, taxi, patrol car or livery) Every 30000 miles (48000 Change transfer case fluid (Four-wheel drive vehicles). km) Replace front wheel bearing grease and grease seals if non-sealed bearings are used. Every 60000 miles (96000 Replace spark plugs. km) * Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels only if unusual wear is noted. Operating in dusty or sandy conditions (such as unpaved or dusty roads) Inspect frequently, service as required Every 5000 miles (8000 km) Replace engine air filter. Inspect the wheels and related components for abnormal noise, wear, looseness or drag. Rotate tires , inspect tires for wear and measure tread depth. * Every 5000 miles (8000 km) or six months Change engine oil and filter. Inspect and lubricate U-joints. Every 30000 miles (48000 Replace front wheel bearing grease and grease seals if km) non-sealed bearings are used. Every 50000 miles (80000 Change rear axle fluid (F-450 and F-550 only). km) Every 60000 miles (96000 Change transfer case fluid (Four-wheel drive vehicles). km) * Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels only if unusual wear is noted. 445 Super Duty (), enUSA