2019 Ram oil concerns
I will be using
Redline 5W-30 when I perform my first oil change on my 5th gen Power Wagon.
That being said, if I were in your shoes, I'd stick with whatever FCA is giving you that complies with your extended warranty. They will find any reason to NOT cover something under warranty if they find what they interpret as the "cuplrit" (aka NOT the oil they recommend).