Shocks - replace them - do all four corners, if the backs are bad, the fronts are not far behind. Use Bilsteins - don't even price other shocks you won't be happy with them. Click on Buy Parts here on MBShop, Phil has some of the best prices.

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Houston, Texas
1984 300CD 235K miles, Elvira, one owner
1987 300TD 180K miles
1974 TR6 78K miles Sarah Jane, one owner
OBK #27