Well copper is bearing babbitt material, its used in very limited places in an engine. I know the main bearings have it, it might be used somewhere else in an M119 as well, I havn't yanked one of those apart.


As long as it runs well I wouldn't worry about it. Since their really isn't anything you can do about it short of a rebuild.

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2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200