Trust me I know it s impossible to be prepared for the unexpected and the techs aren’t adequately compensated. I did a few semesters at a local community college for automotive but didn’t follow thru as the pay wasn’t worth it. I’ve been more than reasonable with techs in the past and there are a few that are honest and trustworthy but I can’t count the amount of times I’ve called one out on their money scheme bs. It’s 10x worse for women my mom can’t bring her vehicle in for service without me or my dad being there. Although, I find immense joy from telling a tech how to do his job in front of others especially other customers. My patience is thin and all trust is lost