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Old 04-16-2008, 03:31 PM   #5
gakusya
Scooby Newbie
 
Member#: 81982
Join Date: Feb 2005
Chapter/Region: MWSOC
Location: Jackson, MI
Vehicle:
2005 WRX STI
Crystal Grey Metalic

Default

If it is just boiling, I don't care at all. The main problem is that overflowed coolant in reservoir tank is not going back to the engine and getting a lot of air in the cooling system.

If there are bubbles in reservoir tank, I do need to idle the engine for at least 10 minutes to stop bubbling. Otherwise, coolant won't return to the engine.
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