Bolts Stuck in Aluminum Hello all. My problem is resolved (sorta) but I'm looking for techniques for the next time this problem shows it's ugly face. I was doing the water pump in my wife's 06 caravan 3.3l this weekend. It's got 235k on it and it's a salt soaked Minnesota lifer. The bolts were STUCK in the aluminum front cover. I soaked them in PB blaster and let it sit for 24 hours. I got four out and snapped one off. I tried a vise grips and welding a nut to the broken off stud. When there was nothing left to work with, I bought a right angle drill and planned on drilling it out. Unfortunately, I snapped the whole ear off when I tried center punching it. I rebuilt the ear with JB heat resistant putty, tapped it, and used a new bolt. It seems to be solid and holding, but I'm VERY unhappy with doing crap like that. Is there any methods to unlock stuck bolts from aluminum? If it wasn't so stuck I'm very sure welding a nut on would have worked!! Thanks!