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no, they are not related. tiny bubbles that make the radiator "foam up" is the result of exhaust gas leaking into the radiator. causes are blown head gasket, cracked cylinder head or cracked block. hth

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โˆ™ 2015-07-15 19:32:48
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Q: If there are tiny bubbles coming out from your radiator when radiator cap is open and have oil leak problem coming from valve gasket are they related?
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