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  #1  
Old 03-05-2017, 09:11 PM
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Leaking coolant when the Temps drop

Haven't driven in a few days. And want do I see? Any help guys?
Drips
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  #2  
Old 03-05-2017, 09:23 PM
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Having the same issue too. Is your the 4.8?
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Old 03-05-2017, 09:30 PM
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That's a LOT of coolant should be easy to find the leak!
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Old 03-05-2017, 11:12 PM
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It doesn't leak when running. Only when it sits. I'll get under there and look. Changed reservoir cap already. So much for simple fix!
Yes it's the hog. 4.8

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  #5  
Old 03-06-2017, 08:27 AM
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Take your intake off and have a feel around. feel under your water pump, check the hoses, bottom of the coolant expansion tank. If you don't find any leaks there, move onto the valley pan and exchange pipe.

This thread may help >
https://xoutpost.com/bmw-sav-forums/...icks-info.html
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Old 03-06-2017, 08:34 AM
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My 08 6cyl did that as well....turned out to be the expansion tank.
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Old 03-06-2017, 10:07 AM
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Quote:
Originally Posted by bmrboi2 View Post
My 08 6cyl did that as well....turned out to be the expansion tank.
Finally, someone with a ray of hope. But she is at 100k miles.... right around the time for colling system refresh. My guess is I'll be replacing stuff until I get to the valley pan/ pipe job.
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Old 03-06-2017, 11:54 AM
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Where do you get the cooling system o-ring kit??
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Old 03-06-2017, 12:06 PM
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Got this one. Hope its right. I know its ebay. But how bad can you mess up o-rings?

BMW Cooling System Heater Radiator Hose O-Rings: X3 X5 2.5 3.0 4.4 4.6 4.8 | eBay
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  #10  
Old 03-12-2017, 07:23 PM
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Any luck locating leak?
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