Finally pulled all the spark plugs out of my gs4, and only two of them gave me trouble.

From what it looks like the part making it so hard to get the boots out is that the rubber fastens itself to the porcelain, when I thought it was the rubber bonding to the cylinder walls.

My question is, is it safe to use boot grease in between the boot and the ceramic/porcelain? The boot literally holds the top half of the plug.

oh and i live in the northwest where the weather never gets too cold, plus my car is always garaged at night.. so is anti-seize necessary (for my application) when installing the new plugs?

BTW I've had my car since '06 @ 75k and now with 135k for pic reference

 

You can use die-electric grease and apply it on the white base.