Mobil 1 (Group III) in a Turbo

[Alex D]

The ecotec turbos .. 9-3 .. all require Mobil 1 0W-40 because it has the GM-ll-025 rating.

 

[BrianWC]

Right but that's not the factory fill.

 

[Hooch]

Quote:

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You know we never saw the data that suggests that M1 is anything other then GIV and GV. We have someones word for it but how much does that weight? ... but we still have no hard evidence of wrong doing and no trail of UOA or VOA to prove that the formaula has been drasticly altered and no longer 100% synthetic by Mobil's old standard of synthetic!

Were is the body?

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It's on one of the Mobil1 web sites. They stated in the product data sheets that they are using group 3 base stock. The link was posted in one of the threads on this topic. What more do you want?