04 XLT, 4.0 L v6 with 4X4. Trans flushed by dealer at 30,000 and 60,000. Went out at 68,000. Rebuilt now has 78,000. The local trans shop which did the repair would not tell me what brand of fluid they use, Why the big secret I don't know. So I may have it flushed and replaced with Amzoil...