Love the forum.
OK, don't freak out techs... When I change my 2000 ML430 transmission filter and fluid (please let's not go into the lifetime service thing) and assuming my 2000 ML430 doesn't have the torque converter drain plug (I haven't looked but other people have said it was discontinued) and since I don't have access to a 'flush system' can I start the engine and shift the tranny for a few seconds and will the fluid in the converter drain into the pan? If only done for a few seconds will it harm anything? I do have access to compressed air. Is there a way to flush the converter with air?
(ducking service manuals and tomatoes...)

Good question... I too have considered trying this method to drain the TC as my 2002ML does not have a drain plug......after all, the residual oil in the system will offer protection for the few seconds the engine is running and my view is that most of the oil in the TC will be very quickly forced out back into the gearbox (sump and filter removed) .....when you consider, for example, that when you change the engine oil, the camshafts, valve gear, etc, run without pressurised lubrication for a few moments without harm until the new oil is 'picked up' so why shouldnt this also apply to the transmission?

It will be interesting to see what others think!..........

That doesn't sound like a good idea. When something doesn't sound like a good idea I would avoid doing it.

Look at it from this prospective; will the benefits accomplished by getting the last bit of fluid out outweight the damage that might result? Probably not.