If you are going to install NGK 100 THOUSAND MILE
plugs into your aluminum heads YOU BETTER use a dab of antiseize on them if you want to remove them one day!
I don't care what NGK recommends. My OEM NGK plugs were replaced at 2 years of service and those same plugs that NGK claimed to be "self-lubricating and corrosion resistant" were already beginning to corrode on the threads.
If your concerned about proper plug grounding use a hi heat copper antiseize, just a dab, and always install using a good torque wrench.
The galvanic corrosion that will occur with two dissimilar metals over thousands of heat cycles and thousands of miles will seize
your plugs into your aluminum heads. To those who don't believe get back to us in another 100K miles when you need to replace your "self-lubricating and corrosion resistant" NGK plugs!
Wasn't this already covered in this thread??