Keep trying. Don't give up. I think the lesson is that some brands of impact tools really overstate their strength. Artic Cat, Ingersoll Rand ... When they say 1000 ft-lbs, you get 1000 ft lbs.

Don't even think about "drilling" it. That axle you would ruin is EXPENSIVE.

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David.X5
2001 X5 4.4i Sport
SOLD! at 160k miles