[DPE]

Not a forum expert, but in the 2023 Track Prep guide it does specifically say that Mobil 1 15W50 can be used in a regular SS (and ALL 1LE variants, along with the regular ZL1, and being required in the ZLE). Given that, GM would be hard-pressed to deny a warranty claim for using the 'wrong oil', when it's specifically listed in their own literature.

Different car, but I believe all Vorshlag used in their S197 5.0 Mustang was Mobil 1 15W50, and it had no engine issues that I recall while setting numerous track records etc.

Motor oil is, and always will be (until we're all in EVs and I'm dead), the source of endless debate on the internet, but I'm inclined to believe if they recommend 15W50 as the ONLY oil for the ZLE on track, and they say you can use it in all other performance oriented Camaros, you can't hurt anything by running it in a gripped up SS. And may in fact help. Also, it seems to be notably cheaper than the DexosR 0W40, so that's a bonus. I just wouldn't run it in winter, for obvious reasons.