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Video: Should You Use Anti-Seize on Spark Plugs?

The nickel coating on most modern spark plugs provides added protection from seizing in aluminum cylinder heads and has made anti-seize less important in spark plug installations.

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There is a debate about whether or not to use anti-seize when installing spark plugs. The official position of Autolite on this question is to consult the service manual for the vehicle being repaired and use anti-seize only where the original manufacturer recommends it.

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The nickel coating on most modern spark plugs provides added protection from seizing in aluminum cylinder heads and has made anti-seize less important in spark plug installations. Anti-seize can alter the tightening torque up to 20%, increasing the risk of breakage. It can also create heat transfer and electrical conductivity concerns.

This video is sponsored by Autolite.

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