My 94 E420 has done this since I bought it at 62,000 miles. It now has 177,000, and no signs of worsening. I have tried both conventional and Red Line Synthetics. No difference. I sure would be curious to know whether anyone who has experienced this has been able to have it fixed, and how.

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Bob Johnston
03 E55
Comand/Nav/Bluetooth/Ipod added
Black/black
(Oh man, this car is sooooo fast.)