i always use no matter what engine some ngk iridium,
but i get em' at trade price. wouldnt buy retail, but!
a lot of people say they dont do squat?!
pay attention to your car before and after and if you
dont find it smoother through the revs after the new
iridium's your not paying enough attention and should
not be worried bout what plug's your goin to use next
time you change em' but more about upgrading from using
woolies engine oil to something a little more like home brand!