My brother took a mechanics course once.
Question: A V-8 has how many clinders (A: 16)
How many valves (A-8)
Uh, suffice to say that student (NOT MY BROTHER) failed the course.
Brother passed, Heck, I'd pass, but not all do.
(I have worked as a small endine mechanic (One lung, Chain saw) and I've done overhauls on 4 bangers.. I would not care to do a modern computer controlled V-8 but odds are I could. Brother is now certified for both Diesel and gasoline bumper to bumper, but then he drove the big rigs most of his life.
Me, I worked the other side, Police dispatcher.
Home is where I park it!