2003 Mercury Mountaineer Scheduled Maintenance Guide 6th Printing - Page 38

Special Operating Conditions Special Operating Conditions Every 60,000 miles Replace spark plugs Change transfer case fluid As required Replace cabin air filter 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 (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 Every Every Every 15,000 miles 30,000 miles 50,000 miles 60,000 miles As required As required As required Lubricate 4X4 front hub needle bearings (F Super Duty) Change automatic transmission fluid Change rear axle lubricant (450 and 550 only) Change transfer case fluid Replace cabin air filter Inspect and lubricate U-joints 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 38 2003 Universal Service Guide (usg) Universal Service Guide USA English (fus)