AK,
You have an 04 and you already have enough miles on it to change the transmission fluid? May I ask, how many miles do you have on it now? I have an 03 with 12,000 miles and although I liked to change mine every 15,000 miles, I haven't checked the book yet to see the change intervals. The first time I saw the Type T-IV was at the dealer's parts dept. on the shelf. If you can get this in a synthetic, please let me know. Thanks.