https://www.gmdexos.com/brands/dexos1/index.html
Hello,
My first post here and looking forward to learning from you guys. Bought a 2018 1SS M6 with 20,000 on it in May.
I'm now at 30% oil life and use the car for street use only.
Was getting ready to plan my oil change and really wanted to use Amsoil 5w30 signature series. But reading this post I might just have to dealer change my oil.
I plan on keeping my car a long time so was wanting the best oil out there.
I thought that was Amsoil.
I attached a link and Amsoil is not listed as an approved oil.
Sorry, I know this subject has been beat to death.