Which spark plugs?

[menasci]

30k miles, time to change plugs?
Which ones???

 

[Jason94gt]

i say replace them with the factory replacement Motorcraft plugs

 

[baller760]

What about coppers? Why do people run those? I need to change mine out also.

 

[Jason94gt]

platinum lasts longer. Copper is fine if you dont mind changing them more often.

 

[DarkShadowGT]

how often do you change coppers?

 

[Defleshed]

how often do you change coppers?

usually 12k miles for standard coppers

 

[Dan_Soprano]

I used Denso Iridiums on my GT, and will probably put them in my Cobra too!!

 

[white99gt]

Awsf 32c's -stock heat range(coppers)

plats are not made for performance apps.They are made for bean counters.