All of the 350 SD(L) engines were bad.

It was a defective engine design.

I would avoid them like the plague.

Here is a link:

http://www.mercedesproblems.com/mbproblems_1.asp

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".