Thread: Coolant leak
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Old 11-21-2011, 07:20 PM
M4XBMW7's Avatar
M4XBMW7 M4XBMW7 is offline
Location: Atlanta
Join Date: Nov 2011
Posts: 955
Mein Auto: F02 (750Li)
Originally Posted by tampamark View Post
If I was you I would start with the O-Ring. If you are not getting sensor errors then probably it still is working properly, you just have a leak? Here is the O-Ring at Home Depot so nicely posted previously, off to the right you can check the local store availability.

It is only $2.27 for a pack of 10, it is the best way to start!
Just finished installing the O ring and leak gone ... Just took it for a ride and bone dry .. Thanks again fellas . But I'm thinking of grabbing a sensor and keep it in the car just in case

Here's the difference ... New rings fits nice and tight . (Green OEM O ring )


Coded, BMS S1 431whp/479wtq 93 Oct /Run Conditions 91*F
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(N54 E82 135i) JB4 ISO FBO, 434whp & 470wtq / Run Conditions 90.28 *F

Last edited by M4XBMW7; 11-21-2011 at 07:28 PM.
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