Thread: Low coolant
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      12-06-2019, 03:43 PM   #16
Qsilver7's Avatar

Drives: F06 650ix GC / F15 X5 50i
Join Date: Oct 2016
Location: Indiana, USA

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Originally Posted by Opie55 View Post
And also, I'm still confused. That small front reservoir cools two things - your two engine computers and the charge air coolers - not the turbos themselves. .
Come to the light...

Yes, you wrote it correctly. The engine cooling and turbo cooling is on one circuit...and the charge air coolers and DME are on their own separate circuit.

See the info below that illustrates the N63TU engine's set-up:
  • the engine's cooling circuit...
  • the turbos' cooling circuit...
  • then the charge air's & DME's cooling circuit...
And yes, it's confusing (or way more convoluted than I ever thought it was before I stumbled upon the BMW N63TU Technical document that the illustrations below came from).
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2014 F15 X5 50i MSport | 2013 F06 650ix Gran Coupe`
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Last edited by Qsilver7; 12-06-2019 at 05:20 PM..