Why use anti-seize compound on the shell threads?
With longer service intervals for spark plugs and Pulstar® plugs in today’s modern engines and the cold-hot-cold cycles that the spark plug endures during its service life, there is a higher probability that the threads will be more susceptible to seizing or binding when it is time to remove the plug. Using an anti-seize compound when installing the plugs will reduce or eliminate this binding. Be sure to check the recommendation of the manufacturer for the correct type of anti-seize compound. Different thread materials will require different compounds or in some cases none is required.
