All you need to know about Dave Ramsey: i worked on his Jaguar XK.

Kids step dad found an unfired mortar while working on base. Kid brought it to school and dropped it in the band room. Thankfully no one died, but there was still a shrapnel ring in the room when i graduated a few years later.

Most automotive technicians in the US are paid 100% commission. The idea of being sold something you didn’t know you needed is how we make our money. Also shops will employ more techs than they need because it doesn’t cost them if we’re sitting around, waiting for the next job.