Bonneville America Forums Forums Technical Forums General Tech Anti seize on spark plug threads?

At risk of starting what may be similar to an oil thread...

I've searched high and low via google for thoughts upon using never seize on spark plug threads, with results that come close to 50 50 for and against.

I did learn that the best way to pull plugs out of aluminum is when the engine is fully cooled...

I wonder what the factory or even NGK thinks about using never seize on plug threads? NGK's web site makes no mention of the issue that I could find. I know that some plugs come through with a thin layer of anti-corrosion material from the factory, but NGK doesn't state whether they do or don't apply said material to the threads.

I ended up doing what an aircraft site recommended - using a small amount on threads two & three, while keeping the very end clean. It would be good to know what an o-fficial source says though.

Thanks

always pull out plugs with cold engine and I'm using just a little bit of copper grease on plugs thread

When I worked at Mazda in the 70's, the factory wanted us to use antiseize compound on the plug threads. The real issue is to use it sparingly and do not over torque the plugs. The compound can distort the torque readings so you can pull the threads right out of the head while never reaching the torgue specficiation.

won't hurt anything as long as you don't over tighten them as a result.I don't do it myself but I have seen plugs stuck so tight that they snapped off and then I had a fun time fixing it. I didn't snap the plug off, I'm smart enough to get the head hot if a plug is that tight. Never had an issue doing that but even if I did it would be better than snapping it off in the head.

I use it like the old Brillcream commercials said. A little dab will do ya.

Shoot yeah.. anti-seize sure ain't going to hurt it.

1 Yea for the anti-seize. As others have said, you must reduce the torque values but I'll take my chances with it rather than to have the threads seize and come out with the old plug. Also, some residual anti-seize will remain on the head threads for a long time, so we may save someone else (if we ever sell our BAs or Speedys) some trouble without them even being aware.

2 words - sparingly and copper.

And a dab of contact grease on the plug top cap keeps that plug wire clip from freezing to the plug.