Re: ATF-2, DEX/MERC, DEX VI. E4OD
Both MERCON and MERCON V are synthetic if you buy synthetic, and non synthetic if you buy non synthetic.
That fluid is probably fine. If they are still producing it to meet the now obsolete MERCON standard it's fine. If they changed it, maybe not. Who knows?
Former Ford Automatic Transmission Engineer
“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson