Mobil1 Full Synthetic does not meet FCA spec MS-6395. I mentioned it earlier, and in the case of this one spec its bogus, because FCA requires a PITA multi-season test be done to claim it meets the spec, so the manufacturers have said screw it for a few of their products, Mobil1 Full Synthetic is one. Actually, Mobil1 conventional oil do claim MS-6395, its just the Synthetic products that don't. So if you use Mobil1 Synthetic and make a warranty claim, there is grounds for denying the warranty because the oil you used did not meet specs recommended in the O.M.Personal prejudice regarding oil changes: Mobil 1 full synthetic viscosity as specified on your oil filler cap. Change oil and filter every 5K miles without fail. Forget what the electronics say, unless they say change before 5K. I popped the right side valve cover to change out a cam follower at 128K miles on my 2011 3.6, and everything looks new, clean, and pretty, with no wear to be found. I use the same oil in my Pontiac Vibe GT with the Toyota/Yamaha 2ZZ motor. No visible wear at 196K miles, and that little engine revs to 8200 (yikes!) rpm.
I do use Mobil1 Full Synthetic in my Jeep and have in all my vehicles for years, I'm not disagreeing its great oil, perhaps the best on the store shelves, BUT regardless if the MS-6395 spec is bogus or not, it simply puts your warranty at risk. My Jeep is NOT in warranty, if it was I would use an oil that is MS-6395 spec.
The listing on the oil cap can be wrong, in the WK2 V6's particularly, but every brand model has had it happen. There's an O.M. in your glove box, or you can download it from the Jeep website, its smart to open it and confirm the recommended oil viscosity.