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Any time you have coolant, heat and two dissimilar metals, corrosion and galling can happen. You never want to get to tightening the LAST bolt and feel the tell-tale ssssssllllliiiiiipppp of that bolt/stud/nut breaking.
Hey, anti-seize is key on this stuff. And don’t over tighten it. and don’t under tighten it. And don’t look at it wrong.