Torque Converter Drain or Not

[BillzBenz]

I took my 98 E320 in for transmission service today. When I picked the car up, I noticed that the invoice only charged for 4 quarts of fluid (001-989-21-03-10), indicating to me that only about half the fluid was changed. When I asked the service advisor about this, he checked with the service technician and was told that my car does not have a torque converter drain plug. From my following the discussions on this and other MB web sites, it is my impression that a 98 E320 should have a torque converter drain plug, the plug having been discontinued later. Does anyone know how I can confirm whether my transmission has a torque converter drain plug? Also, the cap over the fill tube is missing the little red plastic tab, indicating to me that it was not replaced. Is this OK? Also, it would be nice if the aftermarket would make a dipstick for these transmissions so that the owner could check his fluid occasionally, especially after servicing to ensure that the level is correct. I have had lots of trouble with this at other dealers, both with transmission fluid and engine oil.