I really get irritated by this 'empowering' rubbish there is about. Just like Lizzie says - it isn't gender-specific knowing what an EGR valve or a screwdriver is. Man or Woman, we can all pick up a Haynes, and read. There's nothing within those pages that should be any more confusing to a woman than a man. I wasn't born with a pre-programmed knowledge about cars, I learned. At one point in my life I didn't know what a torx is, I asked, looked it up, whatever, just like anyone else learns.
I really don't know why a woman isn't as capable at replacing a gearbox as a man is - but apparently, according to the book's blurb... you can learn "how to deal with a puncture, replace a brake light or even do an oil change" Wow! So witht he help of this book, you girls are actually capable of undoing a plug, refitting said plug, then pouring liquid from a bottle into a hole with a very obvious yellow cap! I bet you feel really empowered now! What next? Female Prime Ministers, Atheletes, perhaps some, with patience may become Doctors?! I roll my eyes at the PC world...