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Old 08-13-2012, 07:18 AM
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jcraigau jcraigau is offline
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Join Date: Oct 2008
Location: Perth, WA
Cobra Make, Engine: G-Force Mk1, LS1, T56, Jag S3 suspension
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Hey Gregg,

Answer is yes they do loose pressure over time. My Commodore bonnet shows the scars from my mechanic leaving a socket on the radiator when mine collapsed. A lovely dent pushing up through the bonnet.

--JC
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