swathdiver
Full Access Member
Somebody supposedly built a better mouse trap? It has literally worked for me for 30+ years and am too old a dog to change now.
5 Things You Should Know About Spark Plugs - NGK Spark Plugs
The five things you should know about spark plugs include information on anti-seize, corona stain, gapping fine wire, torque and copper spark plugs.
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I speculate that GM has been doing this since at least with the LS engines. Like you, I always put anti-seize on the threads. NGK makes or made our plugs.