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May 22, 2017 at 1:09 history edited tlhIngan CC BY-SA 3.0
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Jul 9, 2016 at 15:44 comment added cloudnyn3 Good answer. Just to add, the reason fusion occurs is because oxidation and heat cause two different metals to "rust". Thus eventually making them stick together. There are some copper anti-seize on the market that hold up well on exhaust nuts and bolts. Exhaust bolts become extremely brittle as well because of the rapid temperature changes they experience. It makes the bolts and nuts more dense and causes the stripping and snapping off scenario like this. This is why I shy away from exhaust work lol
Jul 9, 2016 at 4:22 history answered tlhIngan CC BY-SA 3.0