You are going to have warranty issues with 5w30 oil from any manufacture thats the wrong oil
Would you have issue not likely but if a failure happens and they send the oil off for analysis who knowsI'll bet you would be okay as long as it meets API CKI-4 and CES 20081 or MS-10902. The words recommended precede the oil grades. Just like using a 0w-40 in extreme cold should be acceptable.
I don't see much need for it thou, unless you wanted the winter benefits and thinner oil when hot.
Amsoil makes a 5w-30 that should be acceptable by Ram. I'm sure there are others, but it's not a popular Diesel grade.
Any ideas on where to purchase this oil. Always used Premium Blue but can’t find in 5-30w for 2022 Cummins H O. Don’t want to sun Delo or other due to warranty fears. Thanks for help.