Mercedes sells a paste that is to be applied on the back of the pads to prevent squealing.

I think it is actually called anti-squeal paste.

It goes without saying that original MB pads are the least likely to squeal. All other aftermarket pads cause excessive squealing.

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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".