Among the M1 0w40's, the ESP X3 and C40 GT are the most shear stable. The Supercar 0w40 was tested for 24 months with GM through track use. The Supercar 0w40 is a nice oil. Notice all but the FS 0w40 contain some ester.
Another interesting Mobil 1 oil that gets overlooked is TSUV. Contains AN and is more shear stable than regular Mobil 1.
For those that think these are just run of the mill oils, take a look at this article. These oils exceed specifications.
https://www.chevrolet.com/the-block/articles/2023/march/mobil-1-x-chevrolet-performance
Another interesting Mobil 1 oil that gets overlooked is TSUV. Contains AN and is more shear stable than regular Mobil 1.
For those that think these are just run of the mill oils, take a look at this article. These oils exceed specifications.
https://www.chevrolet.com/the-block/articles/2023/march/mobil-1-x-chevrolet-performance