I'll probably do some research on red line but will most likely stick with Mobile 1 although change the oil more frequently, 10k +/-.
Thanks!
With forced induction engines, you will encounter sheering due to additional heat and fuel dilution.
- Red Line Oil 5W-30 would be your best bet. The polyolester in it gives that oil affinity to metals, resulting in film strength. They also use mPAO instead of viscosity improvers, so this Red Line oil will not shear or leave you hanging, ever.
- Mobil 1 FS 5W-40 - it has a thickness of 10W-30 at cold temperatures (~80 cSt @ 40C), but it flows all the way down to -45C. I guess it's not a problem where you live. Mobil 1 came out with it to address the shearing issues of their FS 0W-40 oil.
- Mobil 1 FS 0W-40 is great for naturally aspired engines. The FS stands for Full SAPS, and in the context of Hemi engines, these oils are loaded with Anti Wear additives and Detergents and ZDDP. These oils are in the same class as Extended Performance, but Mobil 1 had to differentiate them somehow. Extended Performance and FS oils don't contain any Group III petroleum in them. They only use Group III+ (GTL), PAO, mPAO in the 5W-XX, and Group V (alkylated naphthalenes and esters) in these oils. That's why they are the best.
Still, Red Line 5W-30 gets my vote if the extra cost is not an issue.
As far as oil filters, the Royal Purple 20-820 and AMSOIL EAO11 are the same filters, manufactured by Champion Labs and using some high tech Donaldson filter media with spun micro-glass. FRAM XG2 or FS2 are also good options if you're in a pinch. It's light years ahead of Mopar or any other filters out there.
I hope I have saved you some research time. If not, please don't be upset with me for the unsolicited advice.
Your truck is gonna be a sweet, sweet ride when it's done!