Originally Posted By: philipp10
Originally Posted By: Ducked
Originally Posted By: philipp10
“Galvanic corrosion does not occur when dissimilar metals are completely dry,”.....water needs to be present for galvanic corrosion to occur.
Yeh. So only usually a problem on Planet Earth.
not in this application. Water is not hanging around these areas typically.
If this were true, there would be no rust on exhaust manifolds. Since there often is, it apparently often isn't.
It'll probably partly depend on the environment (high humidity here, for example, with periodic typhoon pressure washing) and the frequency of use.
Whether galvasnic corrosion would actually matter in this application is another matter. There's an argument that such corrosion actually helps keep the surfaces apart. If there's any truth in it, that may be the basis for the recommendation for copper mentioned above.
I'd use the aluminium stuff, because, like the OP, I have some (bought in Japan), plus, unlike the OP, I can't get antisieze of any kind here in Taiwan.