To all of you...
What a great web site! I love the enthusiam and the honest advice.
I will do the chain and the guides. I'll let you know of my experience.
This is my first Benz. We bought it just two weeks ago as a second car (we have a TT roadster). I figured it would be a great classic sedan, stunning (black on black with red woodwork, mint overall), practical (large trunk, room for friends and family on visit), and overall reliable (do the maintenance, the block will last forever). I have worked on cars before as a hobby, and I can get the parts for a reasonable price. And it's from my home town! (Though I live in the states, I am originally German, and actually from Stuttgart. I'm not kidding.)