Crap'n Neal® wrote:
Those who can 'afford' an inboard engine are plagued
with diesel oil smell no matter what.

Wrong, as usual.

If the fuel system has no leaks (and why should it have any, other than
stupidity and/or incompetence) then where is the diesel smell going to
come from?

Your statement just shows that you don't know much, and don't have any
friends who know better.

DSK