I agree with you. The weakness is the heat these engines generate, it's crazy. I am going to try the following next PUP 5W30, Mobil 1 0w40, and the Shell Rotella that you mentioned and ofc I will run a UOA for them all. For a gear oil what would you say about the Penzoil Platnium 75W90? Don't feel like spending the money on Amsoil, RL or Royal Purple. Once again thank you for the assistance, time and input, it's greatly appreciated.
I wouldn't even worry about the UOAs. You're not going to be able to get any valid comparison from one oil to another. All those oils will work quite well, and you won't tell much meaningful in a UOA to differentiate them, except maybe OCI length, and they're all robust enough that such a matter won't trouble you.
That gear oil would be just fine. I used RP simply because I was able to get it barely above conventional gear lube pricing.