Do i have to use iridiums or can i just put a set of platinums in there? 04 3.0L

 

http://www.audizine.com/forum/showthread.php?t=206626

 

Not really helping much since they mostly talk about boosted cars, I did find the one link that said a platinum will last as long as an iridium, I gapped my autolight platinums to about .40 and they are running pretty good, i change plugs every 15-20 miles anyway or whenever im bored =)

 

^^^ Well thats good then. You basically stock anyways, unless you go SC you can stick to the one you like.
And yeah, some people (1.8T BT) change then with every oil change.