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A hose to no where
The coolant expansion tank in my 2005 X5 4.4L cracked and lost some coolant. I suspect faulty cap ( over pressure). I ordered new tank and cap.
While taking the tank out I notice an open ended hose between the engine and the radiator. I had never noticed it there before and I can't figure out where it hooks up too...
See pics.
Any idea?...
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