The recommended motor oil for a 2000 Ford Expedition depends on the engine it has. There were several engine options available that year. To know for sure, you need to check your owner's manual. It will specify the weight (like 5W-30 or 10W-30) and type (conventional, synthetic blend, or full synthetic) of oil recommended by Ford.
However, a common recommendation for many 2000 Ford Expedition engines was 5W-30. This is a good starting point, but always check your owner's manual for the manufacturer's specific recommendation. Using the wrong oil can damage your engine.
