The Drive Special Report: Why Volkswagen’s Diesel Engine is Different

Most of us don’t know much about urea other than mammals produce it. But when talking about diesel engines, urea is associated with the fluid used to remove harmful particulates from diesel exhaust. Unfortunately, our understanding of how a urea tank works stops there. But never fear, our very own Benjamin Preston is here to shed some light on how urea tanks work, and their role in Dieselgate.