Leaking coolant when the Temps drop
 

Haven't driven in a few days. And want do I see? Any help guys?
Dripshttps://uploads.tapatalk-cdn.com/201...d1b99bd561.jpg

Having the same issue too. Is your the 4.8?

That's a LOT of coolant should be easy to find the leak!

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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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

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.
:popcorn:

Where do you get the cooling system o-ring kit??

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

Any luck locating leak?