10) Doesnt mind awkward positions
9) Trained to do it right the first time
8) Always wears protective clothing
7) Enjoys doing it in the open
6) Knows what lubrication is all about
5) Great hands
4) Never minds getting dirty
3) Our engines last longer, a lot longer
2) More stroke, more power
and reason #1 is…..
Diesel mechanics have bigger tools than the auto mechanic!!!