Thanks you're right, they are indeed Not iridium tipped (the dealer was wrong-surprise).
They are copper and nickel tipped according to the ngk website.
I actually have the 4's.
If there's an actual mpg increase in an ngk iridium, please recommend. Otherwise, I will keep these in the VX & HX too.
No such thing as a tune? Ok fine.
I didn't proof my work.