The Copper spray is ONLY a tack spray for the head gasket its self. The Grey Silicone is for the front seal and prevents the oil weeping
I have talked to a number of different professional engine builders and the consensus is to USE copper spray.
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Fu*king ginger bread man stole my wallet...
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d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson
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