There is another option. I installed "speed bleeders" on a 1983 300SD and 1978 300D. These take the place on the existing bleed valves and allow one person brake bleeding. They may be viewed at www.speedbleeder.com
I have no ties with these people, I was able to purge all the old fluid and bleed all brakes in less than one hour. Plan on setting up all my vehicles this way. At approximately $20 a vehicle I feel they are a good alternate to spending $200 + for a pressure bleeder.

[This message has been edited by Dennis Taylor (edited 01-02-2000).]