if metals werre touching each other, there isn't much realavance for the Redline because:
1: redline prevents corrosion VIA WATER between metals.
2: if the metals were touching, they are conducting directly.
3: even the small surface imperfections where water would sit (thermal grease concept) this would simply speed up the corrosion process cause there is a small layer of water between the metals. therefore, the current testing should hold the same, everything may just happen faster (with the micro gap thought).
however, the direct touching of metals has always made me wonder. Anyone ever do any research on direct contact corrosion?
oh and is the z4's aluminum anodized? if so then there should be no corrosion unless it is scraped off.
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