Date registered: Dec 2005
Vehicle: W211 E320 Bluetec R129 SL500 - $1300 car ........ Ford F350 6.7l
Location: Vegas MAN, Vegas
Mentioned: 10 Post(s)
Quoted: 1250 Post(s)
Those didn't make to US till 2005, but assuming those are the same engines, the motor oil is 7 liters from what I remember.
Automatic transmission is a trickier one, since you never drain it all. Pan drop will get about 3 liters. If you can drain the converter it will be about 8. For flushing you need about 12.
Welcome to the forum and please fill up profile with car model and location?