In retrospect, 8nm plus 90 degrees is /aggressive/ for an M6 bolt into aluminum.

Yeah, I'll admit it, I followed a bad aftermarket instruction without confirming it in the service manual. I know M6 is 10nm. Sometimes 9, sometimes 11, but it's in that ball park.

In my head I was like "90 degrees isn't too much" thinking it might be a way to get to 12-14nm. 27nm at 60 degrees was a surprise.

The T8 bolts (Toyota weirdness, ~8.8) stretched but the threads remain. I got away with it. *phew*