Zoomie you might be on to something here. Maybe a section donated to geo areas for people to report where they can get DEF in a pump or even a jug. You certainly don't want to buy DEF at the dealership. I asked how much when I bought mine, $23 for 2.5usgal. When I was just below 1/2 I went to Dowler Karn and asked same jug $13.90, bulk 79cents a liter. Anyway would be good to know spots alone major highways like 401. Husky just outside of Windsor has DEF in pump 79cents a liter $2.98 USgal