On the W140 chassis the lower control arm bushings can & will go bad in 50K miles or less. Also the lower ball joints & steering shock!
The rear lower control arm bushings(on the front arm) are "hydraulic" & if the oil leaks out the front end will SHAKE.
MERCEDES Benz Master Guild Technician (6 TIMES)
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44 years foreign automotive repair
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190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)