[wally_bert]

My dad and uncle should have been dead from fried lungs if diesel was so dangerous from decades of running tractors and just about any piece of construction equipment out there.

[editor-surveyor]

.
The only thing that is dangerous is the anhydrous acids that are created by catalytic converters.

Prior to catalytic converters, nothing emitted by auto engines was legitimately classifiable as a polutant.
.

[antidisestablishment]

I agree. Now, just don’t ask about my hearing. ;)