I usually start with hammer in a torx bit that is big enough to cut its own groves. Then use impact tool. I have nearly 100% success with this method. CW a couple taps to help break the seal.
If that doesn't work drill out and use bolt extractor. Use right angle adapter when drilling or you'll get a drill full of oil.
Draining the pan will remove any drilling debris.
__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)
|