Tech Tip Tuesday: Preventing and Repairing a Stripped Drain Plug | The Service Station Blog
If you've ever Time-Sert'd or Helicoil'd your oil pan - BMW M3 Forum (E90 E92)
Quick lube shop stripped my drain plug. I can barely get tongue & groove pliers on it (but not vice grips) but they torqued it too much. A stronger friend is not