Another FYI for anyone coinsidering this patch:

If you clamp or otherwise seal the leak and a short time later you hear the exhaust again, so you undo/redo it but once more, a short time later you hear noise again -- and this happens, say, 3 or 4 times with the "fail" time occurring more rapidly, check the adjacent pipe to see if it also has a crack or hole and if so, seal it.

This did not nececessarily happen to me; I'm just sayin"...

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2008 E350 4matic / Black/Anthracite

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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black