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