Quote Originally Posted by GerH
Managed to get myself 4 iridiums for when I do the little service on the car. Thought to myself why not when I was offered them. Obviously they demand a higher price but for what reasons!
The blurb:

http://www.ngk-sparkplugs.jp/english/techinfo/iridium/01_1/index.html

Have em in myself....car starts, drives....no real noticeable change?