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Old 02-15-2010, 08:05 PM   #6
dave45056
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Join Date: Apr 2006
Location: Oxford, Ohio
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I would not go thru with the test unless you see some other symptoms of a HG problem.
White sweet smelling smoke.
Mysterious loss of coolant
exhaust smell in coolant (or burst lines from over-pressure)
Milky oil color.
As far as your other cooling system parts you bought, I would put that off until warmer weather. In the meantime, why not buy more of the cooling system parts which fail on these cars? There is a black plastic cooling fitting under the intake and another on the back of the head (if your engine is M44) which are known weak links on our engines. They are not expensive but if they fail, you will almost certainly overheat. While you are in there you should think about your water pump (plastic impellers are bad), and oil filter housing gasket and bushing (since this will fail when cold weather hits at some point).
There are write ups in the knowledge base about these items.

I think you dodged a bullet, but this should make you think about these few maintenance items.
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