I just finished doing my 97 S500 Coupe. I used a lift at the hobby shop which was great. The process is very simple, but you need a few tools. I used the shop dipstick to check the hot & cold level of the ATF before I drained it. I also measured all the fluid that I drained from the pan and the converter (plastic pitcher from the $ store). I removed 8 liters exactly, and that is what I replaced. Checked it with the dipstick and was good to go! I also got a 27mm socket to turn the crank and a #30 Torx to remove the pan.

Cheers,
Steve

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97 S500 Coupe 139Kmi.
92 300CE 150Kmi. Sold
89 F250 Diesel 220Kmi. Dead
98 GMC 1500 160K.