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Old 03-05-2011, 05:06 PM
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bluebee bluebee is offline
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Location: San Jose, California
Join Date: Mar 2008
Posts: 25,236
Mein Auto: 02 BMW 525i M54 auto 130K
Originally Posted by rexgo View Post
Should I use any sealant on the thermostat housing & housing bolts?
I had asked the same question but for my 2002 525i (where the thermostat and plastic housing are a single unit).

The answer came back emphatically "no" (by all whom I asked who should know).

But I don't have a clue if the 97 528i is similar so the question needs be answered by someone else. Sorry.

See: BMW oils, lubricants, sealants, & thread lockers (pdf) (gif).

Last edited by bluebee; 04-05-2011 at 05:30 PM.
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