I don't like screw extractors. Too many have broken off, leaving a worse problem because they are hardened steel that you can't drill out, requiring a "tap burner", which I don't have. I currently have a broken off extractor tip in the valve cover bolt hole of one of my 60's U.S. cars. I gave up trying to fix it on the vehicle. If you do use one, drill the largest hole and use the largest extractor that fits, and stop if it feels close to breaking.

I prefer drilling a series of holes until there is just a shell of the original bolt left and then removing that with either a tap (small bolts) or peeling the shell inward (large bolts). The trick is getting a perfectly centered starting hole. Some people have claimed success welding a nut onto the end of the remaining bolt. The heat helps break the bond, if rust was the problem.

common sense goes a long way too, he was only talking about and oil pan bolt not a head bolt or any other bolts it works for those bolts also i have drilled out many bolts, just gave the guy and idea of what i would do, not trying to act like i know everything, i forgot more then most will ever know, sorry i was a master mechanic,retired. i have been a member on this board for a long time and this is one of the reasons i hold back on posting anything for being attacked , thanks guys the ones that really could use a little help can't get it for all the bull. no offence to anybody yall have a nice day, i'm going back to my garage and work. oh yea ps i'm sorry i don't have 12.000 posting i have better spent time, thanks again, does this get me slamed. hope not. i have been working on all kinds of cars very long time and never steped away from helping someone, reading the 1st post real slow would help then you would get the whole question. sorry again someone touched a nerve ,

now lets see if the bolt is broken off flush you will have to drill it out first to use and easy out i prefer snapon the square ones and i have broken them off too so be careful don't buy the cheap stuff from autozone or any cheap tool so as your going to have to drill it out anyway to use the easy out thats what mechanics call them just go ahead and get some sharp small drill bits all the way up to almost the broken bolt size and just drill it out then you can almost turn it out with a pocket knife, now this works good for small bolts like oil pan bolts but works good for almost all bolts when you drill the center of a bolt out you releave the thread pressure and it should come out as a shell , now when you get it out run a tap or a new bolt back in a clean it up a little . thats my 2 cents worth.

For My own Vehicle If I had one broken Oil Pan Bolt I would simply forget about it and make sure I carefully used Sealant on both sides of the Pan Gasket.

I know that that goes against the Mercedes don't need Gasket Sealant Folks and the the other idea gluing the Gasket only the side/part that is removable so it is easier to scrap off later.
But, the Oil Pan is not something you would normally be removing often.

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84 300D, 82 Volvo 244Gl Diesel