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I thought I was being pretty smart by using anti seize on the spark plug threads but a NGK technician told me not to do that as they have an anti seize substance on them and using anti seize can cause detonation. I'm always nervous pulling plugs on my bike, would hate to strip them. Is what I was told true of all plugs used on Harley's?
I have been using antiseize on sparkplugs for over 25 years. I have had more trouble not using it than using it. I am sticking with antiseize, but just a tiny dad will do ya.
I use Permatex
I was told years ago by a guy at the moco not to use the copper anti seize cause it messes with the ion sense. Just repeating what i was told. He was the head of the powertrain division not a janitor.
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