Quote:
Originally Posted by Pdwight
But why wouldn't you use anti-seize on two dissimilar metals  |
Porsche has for many years recommended against using anti seize because many types commonly used in the EU are actually dielectric (read an insulator) and reduce the plug's ability to find a ground. The metal paste types used here are fully electrically conductive, which eliminates this issue while protecting the alloy heads.
Having had to repair several cylinder heads with plug holes whose threads came out still attached to the plugs, you would have to be nuts not to use it, but "old wive's tales" persist....