Originally Posted by djbmsu
Love them or hate them DEF is here to stay and they produce "0" thats a zero polution to the air. The exhaust from a DEF engine is more pure than the air we walk around and breath. Sorry you had a bad situation with the system, but there are 10's of thousands of them on the road with very few problems. Sounds like you have numerous issues with your coach and hope that works out for you.
Wow, that's quite a statement! Zero pollution and cleaner than the air we breathe? I would sincerely love to believe those attributes about DEF systems, but I'd first like to read supporting published data. I truly don't mean to offend or disagree with you, but can you direct me to supporting references?
FWIW - I fully support pollution control devices such as DEF systems for diesel. And, IMHO, any other fossil fuel system for that matter. Air and water are precious and as individuals we should all do what we can to help keep it clean