Any Mercon V will be just fine. You'll hear ppl harp on Royal Purple or Amsoil or Ford Honey etc... Never ever in my life have I ever had an issue because I ran Autozone Mercon vs some crazy *** brand.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.