I forgot to add a caveat about HPL oil categories.
The viscosities vary by category. Their 5W-30 for instance is NOT the same viscosity in different categories.
For Ram 1500 owners it doesn't really matter. You're restricted to 3,000 lbs gross towing load, and your truck weighs ~ 1,000 lbs less than a 2500 or 3500. Heavy Duty trucks can tow 3 times as much.
For those of us with those heavy duty trucks who tow way more than 3,000 lbs, viscosity matters. A lot. to reduce rate of wear and power loss. I want an SAE 30 oil in the mid-to-upper viscosity of that range.
SAE 30 range is 9.3 - 12.5 cSt @ 100 C. HPL has a 5W-30 with only 10.2 cSt @ 100 C. That's only 28% into the SAE 30 range. They also have a 10.7 cSt @ 100C. That's a mid-range viscosity @ 44% into SAE 30 range.
In their "Super Car" category is their 0W-30 with a 12.2 cSt @ 100 C. That's 91% into the SAE 30 range.
Finally, if you live in cold climates, you only want the Premium Plus or Super Car. These are the only two categories with all PAO / Group IV base oil. They have lower cold viscosities than Group III.
Don't quibble with the 10% ester oil these need to have to hold additives in suspension with all PAO / Group Iv base oil, please! lol