Spark plugs

[David p]

Autolite platinum fine wire plugs for 4.0
Any reviews on these or should I stick to the copper?

 

[whippersnapper02]

Denso or NGK copper. No need for anything else.

 

[David p]

Is there a reason why? Besides them being good conductors.

 

[whippersnapper02]

The only benefit to iridium is the longer life. With the plugs being fairly easy to access, there's no need for a longer life plug.