A few months ago I took my car into a BMW indy here in Toronto to replace the transmission fluid, gasket and filter, (all with factory stuff from the dealer) because it was making that funny whirring noise, that both people on this board and Kirt Koeller suggested is due to a non-OEM filter/gasket. This was a solid $425 oil change, and the whirring is back with a vengeance. I didn't drive the car for about four months after that, but now for the last 2 months I have been driving it, and that odd noise that occurs on each shift, lasts well into 5th gear, whereas before it would go away by 3rd. Also it is louder. And the shifts are getting very slowly but progressively worse.
Here is my question. I have the receipt for the work the indy did, and one line says 'Trans Filter A5S360R/390R' - which isn't my gearbox. Apparently that's a GM E46 unit or something.... I don't know if this is a typo or not. I have a bit more money now to take it in again to have a look, but I don't know hwere to start. Take it to the same shop again and ask them about the work? It is a 6 month old oil change, but really the car only has 2000km on it since then. Or take it to another shop, and let them empty my wallet haha? I don't know what my first step should be...
Any info or suggestions highly appreciated!
(car is a 11/94 build, 540iA.)\