I hate those purists...they're never satisfied!
But, fyi, you don't need to add a stabilizer to get ll-01 oil to last 10K miles, nor do you need a new filter halfway through.
I just did a change at 10K, maybe added a 1/2 qt total during that interval near the end. Filter didn't break, fluid was dark but doing its job and would keep doing it. You don't need anything additional.
Anyway, there are some here that are really tight, and others that are too loose. Best you find a middle ground, but make sure your back is always against a wall so you're aware of Furries if any are around (hide yo dog, btw!).
Upcoming NYC dates: Jan 8 and 27. See Facebook for other shows and PM me if you can make one...love to see you there!
Mangofy your E46!