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
rtz549 wrote:
Get it at the pump for ~$2.79
http://www.pilotflyingj.com/def-at-the-pump
Much written on here about the subject - problem at buying at the pump is that most of us have the fill on the passenger side of the MH and pumps are on the driver side - including all Flying J that I have seen
