Yes, the 300e-2.8 which I also have. In the CD manual, I navigate down to the transmission fluid change procedure for the specific model and I guess it gives you a general purpose tabulation. The trannys listed for 6 cylinder are 722.1 722.3 722.4 and 722.5.
BTW those numbers I quoted are wrong those are for the 4 & 5 cylinder. The numbers range from 6.6 to 7.3. I just checked my level and Alex is right, it's almost impossible to get a reading specially if it hasn't warmed up. After a 20 minute drive I checked again and barely saw the level, it was all the way at the max mark.