Eh, it's still required to work on cars/engines. Thankfully we work on smaller vehicles (Mazda/Nissan mostly) and not some big ass diesel stuff.
I can "engineer" my way out of most situations, and have been very successful accomplishing things that many men can't, because they can't "think outside the box". What I mean by that is that I have to approach things differently. I have to understand things more completely sometimes, so I can work my way around the lack of brute force, where many men can just push/lift/torque something without thought, and they get complacent. That allows me to see different solutions to things that may stump others.
That said, I have found instances where I am just not physically big, or strong enough to do something, and need help.
I also have the benefit of being much smaller, so I can get into places a lot of men can't. It has its benefits and drawbacks.