I would say it is worth it just for the experience. People either want knowledge or be entertained... or both. The more often you do it, the faster you gain the experience of how to present what they want. Edited videos are always better quality, but take much more time.
Your field may be a bit trickier since anything involved with working on cars can take a very long time. No one wants to watch someone turning screws for 20 minutes straight. What may work for you is how you the present it. Present the problem/issue, the plan, and then the result:
Problem: Someone wants a cheap way to increase power and efficiency.
Plan: Install new air intake, MAF, throttle body, etc.
Result: Increased dyno numbers, mpg, etc.
The benefit of something like this for you is that it is still easy for you to shoot, and minimal editing (probably just one video added to another). The benefit for the viewer is that it can keep them engaged for the short duration since this is probably what they are searching for. The benefit for BOTH is that if this is what they want, they will comment and ask "how did you do that?". Now you can later show them the video of "how" later (which you could still film while doing the original process), and link them from the original video. Boom... you just double dipped them.