I think my father used to drink it by the gallon. This is what my grandmother on my mother’s side told me.
My parents divorced when I was one and I didn’t grow up with him,so I don’t know about the Mt. Dew.
He did smoke like a chimney but has since stopped.
I had one bishop question my ‘worthiness’ because I lived with my mother at the time and she smokes. It was like I was guilty by association. LOL.