Soooo...although I've owned several Jeeps over the years, I have never lived in a hilly or mountainous region until I got my 2-door JL with 3.6L. Today, my brother-in-law was demonstrating some engine braking techniques on a very steep mountain road, and we spent at least 2-3 minutes at 4500 rpm in second gear. Third gear just didn't slow our descent effectively, and the 3.6L engine red lines at 7000 rpm. However, I still thought 4500 rpm was a bit excessive, and am a little concerned about engine damage at that gear/speed. Still new to the Pentastar, so just curious what you all think, and if you have any experience, advice to share. Many thanks!