I have an 06 325i and want to change the Tranny fluid and filter at 30,000 miles even though the Dealer told me it is 100,000 mile fluid. Can anyone tell me where I can get the fluid. The Dealer told me that no one makes the fluid for that car yet and would cost $50.00 per liter plus the filter costing a total of around $400.00 to $500.00 for them to do it. I called a couple of Tranny shops locally and they told me they can do it but will they just use any tranny fluid? Thanks.