I am running the 10W30 in a 5W20 application and its is fantastic. Can't say enough good about it.Basically. Also d1g3 approved which is an improvement over d1g2. But gm only gives it to 0w-20 and 5w-30 grades not 5w-20 or 10w-30 which I think is silly.
True but generally a newer approval is gonna mean a better overall formulation but not always. But I'd still happily run the non dexos grades in my 2021 anyway and expect the engineering or manufacturing to be the reason for a failure and not the oil.I am running the 10W30 in a 5W20 application and its is fantastic. Can't say enough good about it.
I will avoid high VM ( vii) treatment if I can, they are vanish sludge and gum makers, thus the 10W-Xx.
GM doesn't spec a 10W30 or 5W20 so no Dexos in those grades. Those grades are more of a FORD thing.
I don't chase DEXOS approvals, it has never done anything for me that I could tell. Whatever that means