Synthetic Oil - Diesel Engine - Proper Oil Change Interval

With diesels it comes down to the soot level and the ability of the oil to keep it small. The dispersants and detergents do that job. Otherwise, diesel service is much easier on oil than gasoline service. I’ve see TDI’s get 25k out of a single fill with a bypass filter installed.

10k, done in a timely manner, should be no issue for an approved oil.

The funky nature of the Teutonic engineering will kill that thing before the engine gives you trouble. The parts are obsolete 10 minutes after the thing hits the assembly line. Most 10+ year old Audi owners are paying through the nose when the sophisticated components fatigue. We do too, due to the continual free fall of assembly line patents vs. aftermarket patent sales, but the Germans leave a more “scorched earth” in their wake in terms of $$$.