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Old 04-03-2014, 12:46 PM   #11
lkchris
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Join Date: Jan 2014
Location: Albuquerque, NM, USA
Posts: 730
The butyl most likely comes from an earlier repair attempt, i.e., isn't factory.
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Kent Christensen
Albuquerque
2001 Boxster
2007 GL320 CDI, 2010 CL550
2 BMW motorcycles
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