DEF milage and general emissions comments

[Neal]

I finally decided to add DEF and could have gone much further. I left this trip full DEF and went from Richmond, VA area to Virginia Beach, back to Richmond, VA and north to Newmar. Then west to SD and now in SE Denver area (Aurora) and there is a T/A not far from me so I figured I'd top off diesel and def before my next stop entering the Rockies. I had 2 dots of DEF still showing which is amazing, very efficient. At the tank it was showing 3/8's of a tank remaining. I wanted to get as much of the aged DEF out to fill with new, I've been mixing new/old for 5+ years now.

Added 8 gals which comes out to 300 MPG of DEF