Does the manufacture and transport of diesel exhaust fluid (DEF) offset the benefits it provides?

Question

I don’t know what it takes to manufacture but at the very least, there’s energy required and it could be dirty or renewable, though most power plants don’t run on diesel. Then there’s the transport, I’m guessing most semis that move it also use it, but what about trains? Do trains use DEF?

In: 1

Answer 1

Diesel exhaust fluid is used to get rid of nitrogen oxides, which are directly harmful to human health. It’s not to reduce carbon dioxide emissions, so there’s nothing to “offset”.