Francis, in my opinion a pressure bleeder is the best thing since sliced bread. It pressurizes the system and fills the resevoir at the same time so you just need to go to each corner and bleed until you get clean fluid or all the air out of the system. I have a motive which works great and is inexpensive.
I've read somewhere (probably on a Mercedes Benz diesel discussion group) that if you spend about a week or so of your time, you could save $20 buy making one out of a garden sprayer.
With best regards
Al