. . . leaking from pump
had similar problem with my '94 E320 cpe. I thought it was the rubber seals but was one of the pumps leaking. A bit greenish scale around the inlet next to the hose is the sure sign of it leaking.
Also had a small crack in the reservoir where it mounts to the frame. So when filled past that point it would leak.
Regards . . . . JimF
'94 S500 Cpe
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