W123

The cruise control on my 85 300TD used to work intemittently, but has not worked at all for a few months. What are the common problems which cause it not to work?

I have changed the oil on a diesel 123 for a friend and after pouring in the new oil I checked the stick and it was instantly black! Is there a remedy? Perhaps a detergent to flush engine?

For a couple of years I've seen your notice about the weak Behr radiator neck and the suggestion to fix it with your repair kit. But it would never happen to me, right?

Last week I found what I thought was a loose clamp on the neck of the radiator. When tightening the screw the hose came off in my hand taking off the first inch or so of the neck with it! Digging out the small end the neck from the inside of the hose I ordered the repair kit from you and made a very successful repair.

Thanks for coming up with that kit-you saved me mucho bucks and aggravation I don't need.

Despite replacing the windshield and rear window seals, the door window seals and the sunroof seals, water still puddles on the floor of the front passenger compartment. I have looked at the drains under the hood hinges. They seem to be clogged but I can't get a wire very far into them and it seems impossible to blow them out with compressed air. Where do they exit? Can one clean them from the underside? The repair manual on CD I got from Mercedes is no help. A lot of the information (visuals)on that CD is very bad quality. Where else should I look for possible water entrance points?