"D" - Operating In Dusty Conditions

SPECIAL OPERATING CONDITION "D" Operating in dusty conditions such as unpaved or dusty roads

EVERY 5,000 MILES Rotate tires, inspect tires for wear and measure tread depth
Inspect the wheels and related components for abnormal noise, wear, looseness, or drag

EVERY 5,000 MILES or 6 months Change engine oil and replace oil filter
Inspect and lubricate U-joints

EVERY 15,000 MILES Replace fuel filter (Crown Vic, Grand Marquis, Town Car, Mustang, Ranger, F-Super Duty, Expedition EL and Navigator EL)

EVERY 30,000 MILES Change automatic transmission/transaxle fluid (not required on 6R60/6R75/TorqShift transmissions)
Replace wheel bearing grease and grease seals on 4x2 front wheel bearings (if non-sealed bearings)

EVERY 50,000 MILES Change manual transmission fluid
Change rear axle lubricant (E450 and F450/550 only)

EVERY 60,000 MILES Change transfer case fluid

AS REQUIRED Replace engine air filter
Replace cabin air filter