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Old 02-20-2007, 09:28 PM   #7
PrerunnerRob
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Join Date: Jan 2007
Location: San Jose
Posts: 847
Re: Aluminum thermostat housing getting eaten up

You reaaly run into it it seems like when you mix aluminum, steel, and copper(radiator and heater core) together. The aluminum acts as the anode when you introduce it into the system, otherwise the copper or steel surfaces get eaten up.
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