That's a page from my 2002 Audi manual. The outrage over mfg 10k changes is what originally drove me here to Bob's to research the issue on behalf of my Audi forum friends. In hindsight, AoA was wrong to spec 10k changes and a lot of harm came from it. Mfgs can be wrong, we've seen it over and over.
Many people here think base my statements on guesswork or some desire to sway the debate toward some pre-determined outcome.
I've been here a long time, I listen and I learn. When I make a statement, sure it's up for debate, but it's founded in a bit of research and rationality.
Bob's is the place to perfect the practice of rational thought. It's a shame a number of posters drag it down. A lot of old timers lament the rapid growth of the forum and some of the pitfalls that come with that. I'd like to see it turn the corner again, and the cries of "mfg spec oil only" muddies the water, imo.
I know not everyone who comes here is equipped to participate in the abstract combinations of technical and anecdotal inputs that are part of the forum. My schooling is History and Sociology of Science, so for me, Tribology is an ideal subject for discussion.
mfg specs lock the oil into a set formulation, but the oil technologies change rapidly. That's why we see lighter oils that work well because of new additive technology, and we see G-III oils that exceed expectations. So, I sometimes overreact to the spec-oil declarations like I did above, and I apologize for it.