I'd use dexronIII before i would use atf+4, i have a non lock up converter so my transmission does not need the friction modifyers in +4, i am told it would make it shift real soft and run hotter, i do have a good transmission fluid cooler and plan to get a deeper delrae transmission pan that holds an extra 4 to 5 quarts of atf, i guess i'll just run dexronIII but type f or type fa is what i'd like to run, like i said i may just flip a coin, heads dexronIII tails type fa lol