To be a good mechanic, you need more than passion and love for vehicle engines. You should be able to actually understand how they work. Experience and hands-on work will be the best teachers for this, but some non-dirty schooling will propel you to greater lengths. After all, a mechanic’s automotive tools won’t be of much use unless he knows what they’re for, how they’re used, and why one tool is preferred over the other. A certain level of physics and laws apply to the craft, as well. From the outside looking in, it doesn’t seem like much, but an auto repair career does take a lot beyond what the eye can see.
At the end of the day, the mechanic’s main assets are his knowledge, skills, and experience. Automotive tools are merely his sidekicks to do the job more flawlessly and efficiently.