antifreeze comming out of driver side back header bolt?

green1 said

Take out the bolt and put sealant on it, the other side rear one, and the 2 front ones.

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Absolutely correct! The front and rear exhaust bolts/studs on both sides screw into water jackets and must be sealed. I've sealed them with silicone and pipe thread sealer. I've never heard what is correct. I'll look it up.