2011 Ford F450 Super Duty Crew Cab Owner Guide 4th Printing - Page 437

Scheduled Maintenance Operating in dusty conditions such as unpaved or dusty roads Every 30,000 miles Change automatic transmission fluid (except (48,000 km) 6R80 and TorqShift௡ transmissions) Replace front wheel bearing grease/grease seals if non-sealed bearings are used (2WD vehicles) Every 50,000 miles Change rear axle fluid (F-450/550 only) (80,000 km) Every 60,000 miles Change transfer case fluid (4WD vehicles) (96,000 km) Inspect frequently, service as required Off-road operation Inspect steering linkage, ball joints and U-joints; lubricate if equipped with grease fittings Replace cabin air filter (if equipped) Replace engine air filter Change engine oil and filter Inspect wheels and related components for abnormal noise, wear, looseness or drag Rotate tires, inspect tires for wear and measure tread depth Change automatic transmission fluid (except 6R80 and TorqShift௡ transmissions) Replace front wheel bearing grease/grease seals if non-sealed bearings are used (2WD vehicles) Change rear axle fluid (F-450/550 only) Change transfer case fluid (4WD vehicles) Every 5,000 miles (8,000 km) or 6 months Every 30,000 miles (48,000 km) Every 50,000 miles (80,000 km) Every 60,000 miles (96,000 km) Exclusive use of E85 (Flex Fuel Vehicles only) Every oil change If ran exclusively on E85, fill the fuel tank full interval with regular unleaded fuel 437 2011 F-250/350/450/550 (f23) Owners Guide, 4th Printing USA (fus)