lots of people on bob's the oil guy forum love this oil.

I'm using the T6 (and prior version).

I've used it on our X5 4.4 for about 70k miles (170k when we traded in). I'm currently using in E90 328. I've used it for years in my commute motorcycles. I ride about 100 miles per day.

as far as drain interval you should get you used oil tested to see if you need to adjust.

just relaying my experience so don't consider it a recommendation.