Checked my reservoir today, bone dry. No codes.
2018 M4 ZCP
Took the charge cooler off to inspect it and to my surprise I found no evidence of coolant in the cold pipe or throttle body. Also no coolant on the ground... Will attempt to top off with distilled water and keep an eye on the levels. I might put an aftermarket cooler into my 50k maintenance plans for peace of mind none the less...
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