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Drill hole in thermostat for air escape?300e
I bought a Wahler 4088.87 thermostat few years ago.It has no escape valve for air.
Now on the Fastlane site,the pictured Wahler has a air valve on the inner rim.while Behr t'stat does not.
On a 300E with a vertically placed thermostat,is a air escape valve necessary??
Should i drill a hole there ?
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Tom 2010 C250 4-matic Sport (Canada)
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