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Originally Posted by Gimme3steps
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Thanks for the article.
One thing the counterman says in the article:
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"Using anti-seize on spark plug threads [that have a shiny metal plating on the threads] that are going into an aluminum cylinder may seem like a good idea, but it is NOT recommended."
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The word NOT is capitalized in the article. I added the words in the square brackets to make the statement correct.
Another statement on the same topic is given in an NGK Tech Bulletin:
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"For spark plugs with special metal plating simply do not use anti-seize on Initial Installation; all NGK Spark Plugs are manufactured with a special trivalent Zinc-chromate shell plating that is designed to prevent both corrosion and seizure to the cylinder head, thus eliminating the need for any thread compounds or lubricants.
"... the metal shell plating acts as a “lubricant” which breaks away from the main body of the spark plug during removal, preventing damage to the spark plug and or threads in the cylinder head."
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If you replace a spark plug that has been removed, then the anti-sieze is probably needed.
This is from the horse's mouth, so to speak:
http://www.ngksparkplugs.com/pdf/tb-...1antisieze.pdf
OEM plugs on Hondas tend to be DENSO, although there is an exact NGK equivalent. They are both iridium and both cost about $12 apiece with a discount.
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