I had no probkem with 3/8 ratchet I didn't even use pentatrant. My Dr Seuss ratchet is very thin very long it would probably snap at about 60 ft·lb and I've remove a dozen of these exhaust bolt/stud (stud will come out if the nut is fused.

They are a weird size nut don't lose track can't buy at a hardware store.

BMW love keeping us on our toes wrt to fasteners!

The nuts & bots holding the inlet manifold down on the M57 are fun sizing too - seven 10mm bolts and five 11mm nuts.

On the M57 exhaust manifold, the M8 nuts are 10mm ATF (OEM) and 12mm ATF (replacement).

I've been buying a LOT of new tools lately! :rofl:

You know why I reuse the bolts. Because my impact can remove axle nuts without unbending the lock clip. My impact will cross threat a 3/4 thick bolt as if the threads were there for it. But my impact can whale on those bolts for an hour, and they don’t snap or stretch, or some other silly shit. My impact bottomes out and will stop turning them. And I actually did tighten them up breaker bar. 1/8 turn takes a shit load of effort. Those shits are tight enough. Even my buddy with bmw specialty shop laughs at me when I ask him if we should change bolts. He literally guns them max tilt on impact and calls it a day.

To stay on thread, remove them, reuse them.