I changed the transmission fluid today on my 1999 E300. One thing that I am not certain about this the intended fluid level when completed. The tool markings from the end are:

|20| |80|

Where should the fluid read? I roughly measured out the fluid that I drained and have put in just a little less than the amount that I drained. After a 23 mile drive the fluid level reads about 2/3rds above the |20| mark.