Ford Mustang (1999-2004) Service Manual: Special Operating Condition Requirements

When towing a trailer or using a camper or car-top carrier:

  • Change engine oil and install a new oil filter every 4,800 km (3,000 miles) or 3 months.
  • Change transfer case fluid every 96,000 km (60,000 miles).
  • Change manual transmission fluid as required.
  • Inspect and lubricate U-joints as required.

During extensive idling and/or low speed driving for long distances, as in heavy commercial use such as delivery, taxi, patrol car or livery:

  • Change engine oil and install a new oil filter, lube front lower control arm and steering linkage ball joints with zerk fittings (if equipped) every 4,800 km (3,000 miles) or 3 months.
  • Inspect brake system and check battery electrolyte level (Patrol cars) every 8,000 km (5,000 miles).
  • Install a new fuel filter every 24,000 km (15,000 miles).
  • Change automatic transmission fluid, lubricate 4x2 wheel bearings, install new grease seals and adjust bearings every 48,000 km (30,000 miles).
  • Install new spark plugs and change transfer case fluid every 96,000 km (60,000 miles).
  • Install a new cabin air filter as required.

When operating in off-road conditions:

  • Change automatic transmission fluid every 48,000 km (30,000 miles).
  • Change transfer case fluid every 96,000 km (60,000 miles).
  • Install a new cabin air filter as required.
  • Inspect and lubricate U-joints.
  • Inspect and lubricate steering linkage ball joints with zerk fittings.
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