There have been issues supposedly related to the heavier gear oil, such as the heavier oil blocking the vent and thus seal(s) have been blowing out. The 75W-140 has been working fine in our 2015 so I will not be in any hurry to change.
This is a favorite among HD owners as it reportedly quiets down HD transmissions. I've been using it for several years now. According to the manufacturer - "Film thickness greater than an SAE 75W250, yet low fluid friction like 75W90." https://www.redlineoil.com/heavy-shockproof.
A fellow member here whom I respect turned me on to the Redline - used it in my 2016 and I think it did quiet things down a bit. I am using it in my 2019 and no issues 🙂 . Not sure what the weight is (75W250 compatible) but it does say “keep out of reach of children” so that does thin the heard a bit here😜