Sensitive? Check yourself, Dougie - the old mirror in the hallway. Man posts information on VW/Audi brochure. Dougie jumps in do to what? Bash Amsoil. Amazing, really.
I am not competition bashing, nor am I sensitive, I am merely setting you straight. You jumped into this bashing Amsoil. I'm not sure why.
Merely stating that M1 0W-40 is not that great of a motor oil may be diminishing to you, but it is reality. I mean it is a good oil, but looking at it's real world performance in viscosity and wear after VERY short intervals sorta makes me think the tests you refer to are not that strict if this is the top tier oil.
Amsoil does not market in mainland Europe and does not compete directly with Motul and Fuchs (both have minuscule US sales). The company chooses not to waste money on sending samples to Porsche, because the dollars used would not be returned in US sales. I am not sure how much Porsche charges. Amsoil is tested to standardized tests and the numbers are published, so I'm not sure what you are referring to. This part of your diatribe almost sounds like bashing...the numbers are there AND they are proven in real world usage.