What kind of transmission fluid for a 2001 Ford F-350 automatic 4wd?

For a 2001 Ford F-350 with an automatic 4WD transmission, you should use Mercon Transmission Fluid. It's essential to ensure that the fluid meets Ford's specifications, so look for products labeled as Mercon or Mercon V. Always check the owner's manual for any specific recommendations or changes based on the vehicle's configuration. Regular maintenance and fluid changes are crucial for optimal transmission performance.