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Unread 10-09-2012, 11:02 AM   #7

Name: Clarksonvalley
Title: United Newb
Status: Offline
Join Date: Aug 2010
Location: St. Louis, MO
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Your Ride: 1995 540i
Have you had a compression check or a leak-down check? Could be a head gasket ready to go - higher HP loads on the highway my be causing combustion gas to leak into the water galleries on a intermittent basis.

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