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 build #48. Bolt ons, suspension, Novi 2000.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.