This is what is bothering me. I just picked up a 2015 Big Horn and have been thinking about oil changes. I still have a 2003 5.7 coming up on 240,000 miles. I have always run Mobil 1. I would like to continue running Mobil 1 in my new Ram but am concerned about potential warranty issues since Mobil 1 is not rated to MS-6395.
Dave
Ask some questions around the subject without actually penetrating it.
I actually took my own Mobil 1 Advanced Full Synthetic to my dealer, as well as my own filter, and had them change it using that. They didn't blink, and no warranty issues were ever mentioned. My first service writer (who sadly left) even complimented my choice of oil. I never asked him to put that on paper, but I have no doubt he would have if I'd asked.
I intend to put Mobil 1 in my next Ram when I buy it, unless I find a smoking deal on something better. Mobil 1's a really good oil, and it can be had just too cheaply -- at Walmart, among other places -- to ignore (for me, anyway).
[EDIT: I used K&N filters because it's the only ones with synthetic media I could find for the Pentastar. On the Hemi you have more options, and Royal Purple seems to be the best.]