Was getting ready to do a spark plug change (16plugs) for the 30k mile service on our rig. Went to the dealer to get the plugs to find out they are like $17 a plug. I was under the impression we use copper plugs like the ram trucks do (which I have changed before). My owner guide says every 30k change for the Jeep, dealer says every 100k. I know the v6 has the 100k change interval. Long story short I told the dealer to get lost since they had no clue what I was talking about. They have not changed plugs on a 14 yet. So I am asking any of you guys if you know anything about the plugs on the 5.7L hemi in a 14 jeep. Thanks!!!