After 30 years it prolly needs a good proper flushing, this takes time if not much effort .

Mercedes says to use citric acid powder mixed with water, look it up, I've done it to amazing results and never had any problems .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better