Want another good one?? I read on a post on a VW web site how to get rusted bolts loose. Normally we spray rust loosening chemical on and tap with a hammer or heat the nut to a dull red. The first one sometimes works and the last one cannot be used where there is combustibles near by. The site suggested warming the nut and bolt to a temperture that would melt wax and rubbing a candle over the end of the threads so the wax would flow into the nut. The bolt would then come off easily. I had a situation that the rust loosening spray did not work, I heated the bolt and nut - rubbed the candle onto the end and--- it worked great!! I use this method now and have not had one nut that it did not loosen!!