2004 Ford F150 Scheduled Maintenance Guide 5th Printing - Page 44

SPECIAL OPERATING CONDITIONS Operating in dusty conditions such as unpaved or dusty roads Every 3,000 miles or 3 months Change engine oil and replace oil filter Every 15,000 miles Replace fuel filter Every 30,000 miles Change automatic transmission fluid Check air filter minder, replace filter as required (Focus PZEV engine) Every 50,000 miles Change rear axle lubricant (E and F series 450 and 550 only) Every 60,000 miles Change transfer case fluid As required Replace engine air filter As required Replace cabin air filter Off-road operation Every 15,000 miles Lubricate 4X4 front hub needle bearings (F Super Duty) Every 30,000 miles Change automatic transmission fluid Every 50,000 miles Change rear axle lubricant (E and F series 450 and 550 only) Every 60,000 miles Change transfer case fluid As required Replace cabin air filter As required Inspect and lubricate U-joints As required Inspect and lubricate steering linkage ball joints with zerk fittings Use of E85 50% of the time or greater (flex fuel vehicles only) Every 3,000 miles or 3 months Change engine oil and replace oil filter Every 60,000 miles Replace spark plugs 44 Scheduled Maintenance Special Operating Conditions & Exceptions