Stripped a bolt on a Mercedes 300D in my driveway last Saturday
I was trying to swap out the glow plugs on my old 1984 300D, you know the ones that are notorious for getting stuck. Fourth one from the back snapped off clean with the threads still in the head, felt like my stomach dropped. Had to borrow my buddy's extractor kit and spent 3 hours drilling it out with a left-hand bit, but I got it out without damaging the head. Has anyone else had luck with those cheap extractor sets from Harbor Freight or is it worth spending the extra money on a real set?