What is it with DEF?
Just what is the Diesel Exhaust Fluid (DEF) ? What does it do and why do I need it? This is my first diesel and I never heard of it.
Forum Discussion
F105 wrote:
Depends on your definition of "new big rigs."
Our 2012 3/4 ton Ram with the Cummins 6.7L diesel doesn't require DEF. But I understand the 2013's and newer do require it.
We were lucky to get it in December 2012.
You were not lucky. The 6.7 from 2007.5 up to 2013 when they added the DEF feature are much more likely to have engine/turbo problems and get what is generally considered lousy fuel mileage! I would not own a Dodge/RAM/Cummins from that era! They also suffer from diesel get into the engine oil and require more frequent oil changes, as they "make oil"!
So no talks!
Chris
