What type of motor oil 2002 Ford Explorer xls?

The recommended motor oil for a 2002 Ford Explorer XLS depends on the engine it has. There were several engine options for that year. To know for sure, you need to check your owner's manual or the sticker located inside the driver's side doorjamb.

However, generally speaking, a 2002 Ford Explorer XLS likely uses 5W-30 motor oil. This is a common viscosity for that era of vehicle. Your owner's manual will specify the exact type (conventional, synthetic blend, or full synthetic) and the API certification (like SL or SM). Always follow the recommendations in your owner's manual.