Those are shit mechanics who are just trying to steal as much money as they can. I would avoid them and call them out whenever possible. I’ve had some good mechanics who go out of their way to save you time and some who have actually helped without charging extra. Not to say it’s required but the stigma of bad mechanics has ended up being the way it is by having people oblivious to what happens under their car’s hood.
Fucking this, I hate having to come into work and coworkers are all coughing and sneezing with “just a cold”. Have we learned nothing!?