That price for the Dexron VI doesn't sound right - it sounds too cheap. Are you sure you didn't get the roman numerals switched around? VI = 6, and IV = 4.
In Australia, the BMW dealer sells 4 litres of BMW part number 83220397114 for around $70, so it's quite expensive, and the bottle supplied isn't even labelled as BMW fluid. I did a quick check and 1 US quart is nearly the same as 1 metric litre. (1 qt(US Liq) = 0.946352 L)
I managed to drain out nearly 6 litres of fluid when I drained the pan using the drain plug.
The quote that you got from your dealer actually sounds about right, if they do drop the pan and replace the filter inside.
Last edited by tempestv8; 10-08-2011 at 04:03 PM.
Reason: Added more information