what fluid type to run 727 4k stall

Why do these threads always pop up just when I get back from Wally World getting.....ATF lol, I got the Dexron though for my DD. For high stall/racing stuff we use Pennzoil Hydrastatic Tractor fluid but only know of a few people using it for street use, I cant take a gamble on my DD so I stick with the "dipstick recommendation" lol.