DEF, Companies where are you? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 15 (permalink) Old 11-20-2011, 12:41 PM Thread Starter
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DEF, Companies where are you?

Since 2012 is mandatory production of engines utilizing the SCR systems, there is more than one company producing Diesel Exhaust Fluid. That brings up the question I have for you Companies, even with the UREA or Adblue if you are in Europe. I work at a place that sells the fluid, automotive stores sell it too.

The question is, where ever we buy this stuff, is the price of really worth the product? (How much is the NOx actually becoming reduced between brands)


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post #2 of 15 (permalink) Old 11-27-2011, 03:36 AM
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Two things.

1. The ECM has a way of measuring how much NOx is being reduced so if you just dump water in the tank it will not be fooled and will set a code.

2. This stuff degrades sitting on the shelf over time so there must be a pretty wide range of acceptable concentrations the ECM will accept before setting a code. I guess if the stuff is less potent it will inject more to compensate, up to a point.

You'd have to do some chemistry tests to tell if one brand is better than another, but it would be false advertising because they print the percentages right on the box.

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post #3 of 15 (permalink) Old 11-27-2011, 11:32 AM Thread Starter
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I know there will need to be some testing with exhaust sniffers. We don't necessarily have to do a test involving the observation on the chemical compounds unless that depth is desired. I think using a exhaust analyzer would be adequate, albeit I am all for the thorough analysis too.

I believe water and UREA freeze around the same temperature, which is why we need heaters on the tanks.

I am just trying to get some conversation from the companies who make this stuff to speak up if they are on the forum. Anyone with an exhaust analyzing machine can tell us the differences between brands, drastic or small and of course the test truck being the constant.

Autozone carries SkyBlue, the stuff we have at my work is KostUSA which I think is made in Cincinnati Ohio.

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post #4 of 15 (permalink) Old 11-28-2011, 03:01 AM
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Just wondering about this whole urea/def in the big picture. I don't know anything about the manufacturing process and the chemistry involved in its production. The question I have is: 1. How much energy is consumed to produce def from raw material inputs all the way to trucking it and putting it on the shelf in a store? 2. What types of pollutants are produced/emitted in the production process again all the way to putting it on the shelf?

In the end are we actually producing less "pollutants" and conserving energy by being forced to use def when its all said and done.

Also don't forget one must factor in all the additional hidden costs as far as using def when you factor in the same questions (#1 and #2 above) to produce all the parts and componants that are added on to trucks and pickups to use the def.

Whenever we are mandated to do something that is supposed to be good for all of us, the regulators fail to anaylize there mandates in the "big" picture, Maybe I'm wrong and need to stop

Any answers or knowledge on this comments are appreciated

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post #5 of 15 (permalink) Old 11-28-2011, 11:22 PM Thread Starter
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Nice Dodge, those are couple of great questions.

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post #6 of 15 (permalink) Old 12-01-2011, 12:03 AM Thread Starter
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http://en.wikipedia.org/wiki/Urea

Here is a start, I am a little busy to get into any real depth as far as research is concerned right now.

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post #7 of 15 (permalink) Old 12-01-2011, 02:44 AM
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Here is some more info on DEF.

http://www.factsaboutscr.com/def/def-facts.aspx

Remember not to talk bad about farmers with your mouth full!
2013 6.7 CTD 2500, 800 ft-lbs torque, 4x4 crewcab Larmine Longhorn edition, 6 sp. auto, 2 tone white/gold
--07 6.7CTD 2500 4x4, Quad Cab, Big Horn Pkg. 3.73, airbags, 6sp auto, with Mag-Hytec deep pan.- sold but not forgotten.
--08 36' Jazz 5th wheel,triple slide, 12,000lbs
--28' 22,400# PJ goosneck beaver tail trailer
--95 & 96 5.9CTD 4x4 5sp. ext. cab. 33x12.50x16 front, 33x15.50x16 rear tires. R-1 tread, wheelbase shortened 30". Used as tugs on farm
--81 IH 1800, DT466 210hp, 10 speed,
--95 FL70, 8.3 cummins 275hp, 10speed
--79 GMC 7000, DD 6V53 210 hp, 6sp ally
-- A whole bunch farm equipment, all colors
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post #8 of 15 (permalink) Old 12-04-2011, 01:06 PM Thread Starter
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For those wondering how UREA works and is introduced to the exhaust tract. The fluid is injected into our exhaust system, the heat itself causes a reaction with the UREA which changes into ammonia (process of hydrolysis) which bonds to the Nitrogen oxides and turns the molecules into H2o & nitrogen.

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post #9 of 15 (permalink) Old 12-24-2011, 12:14 PM Thread Starter
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Here is some more to check out

http://www.nrel.gov/vehiclesandfuels...jackson-15.pdf

http://www.nrel.gov/vehiclesandfuels...s/adl_urea.pdf

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post #10 of 15 (permalink) Old 12-31-2011, 12:08 AM Thread Starter
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Found this searching Google, seems interesting.
http://special-reports.pickuptrucks....nomy-test.html

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