2001 Ford F250 Scheduled Maintenance Guide 5th Printing - Page 35

Special Operating Conditions Special Operating Conditions Items Needing Special Attention If you operate your Ford/Lincoln/Mercury primarily in one of the more demanding "Special Operating Conditions" listed below, you will need to have some items maintained more frequently. If you only occasionally operate your vehicle under these conditions, it is not necessary to perform the additional maintenance. For specific recommendations, see your dealership service advisor or qualified service professional. Towing a trailer or using a camper or car-top carrier Every 3,000 miles or 3 months Every 30,000 miles Every 60,000 miles As required As required Change engine oil and replace oil filter Change automatic transmission fluid Change transfer case fluid Change manual transmission fluid Inspect and lubricate U-joints Extensive idling and/or low-speed driving for long distances as in heavy commercial use such as delivery, taxi, patrol car or livery Every 3,000 miles or 3 months Change engine oil and replace oil filter Lube front lower control arm ball joints with zerk fittings, if equipped Every 5,000 miles Inspect brake system Check battery electrolyte level (Patrol Cars) Every 15,000 miles Replace fuel filter Every 30,000 miles Change automatic transmission fluid Lubricate 4X2 wheel bearings, replace grease seals, and adjust bearings Every 60,000 miles Replace spark plugs Change transfer case fluid As required Replace cabin air filter 35