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Old 07-26-2012, 08:17 AM   #28
Registered User
Join Date: Aug 2010
Location: Concord NC
Posts: 17
My Ride: 06 BMW M3 Comp Pack
If you don't rev up and down air WILL be trapped in heater hoses, water valves and heater core. The engine might be bled but the cooling SYSTEM won't be.
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