What should I do about Jiffy Lube purposely tightening my drain plug and oil filter too tight?
Tightening the plug enough to strip the threads is wrong, if they stripped the threads they should pay to repair it. Crushing the old filter to remove it is not unusual, an old mechanics trick to remove a stubborn filter is to drive a screwdriver through it and twist it off. It’s being thrown away anyway so it doesn’t matter if the old filter is damaged. It isn’t common to overtighten a filter since too much torque will crush the filter . You are not supposed to only hand tighten a filter, you are supposed to hand tighten it and then tighten it about a quarter turn with a filter wrench. If you only hand tighten it, there is a risk that it will come loose while driving. At best you get a big leak and a dirty engine, at worst you get an engine fire.
