2014 Challenger RT
I was looking at the manuals for my wifes 13 Hemi Durango and my 14 Challenger RT. The 13 5.7s have a 30,000 mile interval and the 14s have a 100,000 interval. I've looked at both plugs, the only difference is that the 13 plug is platinum and the 14 plug is iridium. So my question is, can I use the iridium plugs for the 14 5.7s in my 13 5.7 and run them for the same interval as the 14 engine?