I found out today that an SLS resevoir is $460 OEM (mine has holes). So $600 for a parts car is not a bad idea...

Then I noticed that MB put the SLS resevoir on the wrong side of the vehicle in 1985. shoooot.....

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1982 240 D, 308,000 - 321,127 miles (sold)
1982 300 TD,166,500 - 226,000 miles
1998 E 320, 120,000 - 144,000 miles
2005 C 230 K, 26,000 - 77,000 miles (sold)