Don’t tell my generation’s dads, but it’s not imperative modern dads teach our kids to change the oil when you can get it done for $30. But if we’re not gonna teach ‘em to do it, we damn sure need to teach ‘em not to trust the bastards who do, ‘cause they’ll rip you off. So, keep an eye on ‘em through the garage window and whenever they look your way, scowl over your coffee and nod grimly like you’re on to ‘em.