I had my 2003 2wd X checked out at the dealer recently. They said my transmission fluid was "burned up" and needed to be changed. Figured this since I have been pulling a pop-up camper over the last year. Cost was $256. I decided to check around on cost since it seemed like a simple service. My X has 95k miles and cant remember ever changing the trans fluid. Firestone does not service the fluid after 65k if it has never been changed. Talked to a transmission shop and they said not to touch it. Apparently the new fluid will break down the sediment in the system, especially at seals, which can cause leaks and/or slippage. They recommended not doing anything. It could last another 50-100k miles without problems. I remember the dealer saying it would shift better with a trans fluid change. I find it odd that the dealer did not ask those critical questions. Any thoughts or advice would be much appreciated.