I have a 2012 Hemi 1500. 130,000 miles, had 87,000 Miles when I purchased it and no tune-up history. I guess I'm just darn lucky. What is the recommended service interval for a major tune-up like spark plugs Etc??
I typically replace plugs every 100k. They won't start causing issues until 120k-150k, but it's a good idea to change them every 100. You'll need 16 plugs, two per cylinder. It could be a lot worse though, the earlier Gen III Hemis needed new plugs every 30k. The switch from Champion copper cores to NGK Iridiums is what extended the service interval.