Learn about Diesel Exhaust Fluid (DEF): what is it? how should I use it? how much do I need? and how will it help with fuel efficiency?

1. Diesel Exhaust Fluid (DEF) Facts

2. What is DEF and how should I use it?
 DEF is a high purity solution of
urea in demineralized water
(32.5%).
 It is used to chemically reduce
nitrogen oxides (NOx)
emissions from vehicles
powered by diesel engines.
 DEF is contained in a separate
tank and sprayed into the
exhaust gases. Never fill the
diesel fuel tank with DEF.

3. How much DEF will I need?
 You will not need to
replenish DEF every time
you refill with diesel fuel.
 The DEF consumption
will be approximately 2%
of your diesel fuel
consumption : for every
100 gallons of diesel
consumed you would
need 2 gallons DEF

4. Why will DEF make me save on fuel?
 SCR with DEF converts NOx outside the engine into harmless
nitrogen and water, with the help of a catalytic converter and diesel
exhaust fluid.
 Competing technology EGR combats NOx inside the engine by re-
circulating a portion of the exhaust back through the engine’s
cylinders. This requires the engine to work harder and consume
more fuel.
 SCR process allows engines to operate at maximum efficiency,
increasing fuel economy, and lowering costs.
 OEMs and fleets utilizing SCR have seen fuel efficiencies ranging
from four to eleven percent in trucks equipped with SCR technology.

5. Is DEF harmful?
 It is non-toxic and simple
to use.
 If you get it on your skin
or clothes, simply rinse
with plenty of water.
 DEF is not harmful for
humans nor animals.
 DEF is not explosive.

6. Where can I find DEF?
 You will find DEF pumps either at
your commercial terminal or at
truckstops, and they will have filling
nozzles similar to those you use for
diesel.
 There is also an option to buy the
product in 2.5 gallon bottles with a
filling spout which makes it easy to
pour into your DEF tank. These
bottles are available from various
outlets.
For further information please contact the Air1® team
at: 877-810-4 DEF (333) www.air1def.com