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Old 12-18-2012, 06:25 PM   #49
Tymatk
Registered User
 
Join Date: Feb 2012
Location: Melbourne
Posts: 52
My Ride: X5
Maybe there is pocket of Air in the coolant system ..... not enough to effect normal driving but when going UP HILL (engine/car on angle), hot day, Aircon running .... all contribute to this?
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