Best LA Exhaust Manifold Bolt sealant?
Permatex high heat thread sealant. Permatex #59214
Permatex ultra-copper is a gasket maker,not a thread sealant.
It is silicone,do not put it on threaded parts,unless you like gunked up threads,when you disasemble. It is used for valve covers,oil pans,intakes.
What you need is a thread sealant. Use the one I suggested.
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