No issues with my SRT.
Because I don't have one! A little humor!
Sorry to hear about issues for you guys with such an expensive vehicle.
What I did experience with my 2014 was the entire gas filler opening broke off. Good thing my tank was at half when I noticed. Took a few days to get the part and have the dealer fix the issue under emissions warranty.If you do a search you will see it is not uncommon with Durango's and Cherokee's.
I believe that they told you that, but I call BS on them. Sure, if it overheats then there could be damage as with any vehicle, but just idling in hot weather without overheating? No....I heard from one guy who works at a Dodge dealer that you can't let the SRT idle when it's hot out. That engine doesn't like it. It actually can mess up the engine....