DEF Mixture- Distalled / Deionized Water 10-17%

[TCDiesel]

I manufacture My own DEF. For the pass Year I have been buying Distilled Water at Local Grocery Store and using it in place of the Commercial Deionized water and the Urea I received form another supplier.

IMO, 33% Urea is just not needed its hard on the DEF Pumps Both Pressure/Vacuum and plugs the DEF injector under certain conditions gets clogged.

The 33% Mixture lower the freeze point to around 12F My 10-17% was 18-20F. The test vehicle spent the entire Year outside 2018-19 it seen extreme cold in MN and MT -30/40. The vehicle has never tripped any DPF/DEF code in its 6 Years of life and has been running the lower % of Urea the entire time. All My Bluetec engines run the same mixture rate. 0 Issues.

Obliviously this is going to be a heated discussion to don't post if your NOT prepared for counter disagreements... Bring it on....

IMO , this needs to be challenged.

 

[dieselshadow]

Interesting. Have you done any mods?

 

[TCDiesel]

To the DEF/DPF systems NO. The engines have simple Mods like Strykers and Bullets.

 

[TCDiesel]

I did use a Fuel analyzer on My Ecodiesel for test purpose, It was under Lease form MPCA so My time was limited, I do believe the results would be the same in any Bluetec Diesel. On the Other Hand the Ecodiesel was a good test Vehicle, because with conditional operation met the EGR shutdown and the NOx was way above allowed limits, But keep in mind the near 0 PPM is next to impossible to meet at certain operational conditions.

I posted and got banned from that worthless diesel1500.com for posting that the Eco would fail future testing (which it did) I have the $3.075.00 check to prove that.

 

[Wayne M.]

Does that Eco have a UQS? I think they’re mandatory after the GHG 17 rule.
Hey TFucili, look on your emission label and see if “UQS” is in that string of abbreviations.

 

[12LaramieHO]

Wow...… Interesting, even though I don't have a DEF truck, this seems it will be very interesting and educational as the thread goes on.
~C

 

[Wayne M.]

Wow...… Interesting, even though I don't have a DEF truck, this seems it will be very interesting and educational as the thread goes on.
~C

Get yer popcorn!

 

[12LaramieHO]

Get yer popcorn!

I have already got it, have recliner laid back and ALL comfy.
And as they used to say at the movies...… "NOW, ON WITH THE SHOW!"
~C

 

[Wiredawg]

Todd,

I know I could google this, but since your gracious enough to share the info, you gracious enough to go the distance with questions.

- Is urea readily available?
- In small quantities?
- any special handling procedures?
- MSDS info available?
- what do you store it in?

I think that's all I can think of right now.

Thanks, Ron

 

[Tuesdak]

Cost?

 

[TCDiesel]

Todd,

I know I could google this, but since your gracious enough to share the info, you gracious enough to go the distance with questions.

- Is urea readily available?
- In small quantities?
- any special handling procedures?
- MSDS info available?
- what do you store it in?

I think that's all I can think of right now.

Thanks, Ron

1 Is ready available , but your better off buy 2.5 Gallons and mixing it yourself 2.5 gallons DEF to 2 to 1.5 Gallons Distilled Water.

No,on the handling

Distilled Water requires NO MSDS Nor does DEF, it can be transported as water and NONE HAZMAT. Urea when mixed with water has NO classification. and is NOT regulated by the DOT

No need to store. Buy and use.

 

[Wiredawg]

1 Is ready available , but your better off buy 2.5 Gallons and mixing it yourself 2.5 gallons DEF to 2 to 1.5 Gallons Distilled Water.

No,on the handling

Distilled Water requires NO MSDS Nor does DEF, it can be transported as water and NONE HAZMAT. Urea when mixed with water has NO classification. and is NOT regulated by the DOT

No need to store. Buy and use.

Thanks, Sir

 

[TCDiesel]

The main reason to lower the Urea content to prolong the DEF PUMPs and Injector.

 

[gsbrockman]

The main reason to lower the Urea content to prolong the DEF PUMPs and Injector.

What would you deem a short life for those items?

 

[TCDiesel]

I expect emissions that are required to be met for lifetime that comments require to meet such standards should meet that requirement?. Is that possible in some cases yes, in other NO. But it makes NO difference when Your 1200 miles form home and your DEF Injector is clogged Because the EPA set some standard that 95% of time the concentration of 33/67 is NOT necessary.

 

[sag2]

I'll have to look at the Urea concentration sensor on mine next time I uncover it. Last time I checked it was within 1% of 32.5%. When I looked at the P207F fault code it gave a fairly wide range on the high side, but only down to 31% on the low side. Unfortunately the diagnostic does not give a specific concentration where the code sets. It just says "DEF has fallen below or above a calibrated threshold".

 

[Learjet]

so does it use more fluid...since it is lower concentrate?

 

[Wayne M.]

I'll have to look at the Urea concentration sensor on mine next time I uncover it. Last time I checked it was within 1% of 32.5%. When I looked at the P207F fault code it gave a fairly wide range on the high side, but only down to 31% on the low side. Unfortunately the diagnostic does not give a specific concentration where the code sets. It just says "DEF has fallen below or above a calibrated threshold".

BINGO! That’s why I asked if TC has a UQS in his eco. So it seems that they allow for water evaporation, but not allow for dilution.

 

[Wayne M.]

And Stan, what about Nox readback? If there’s a heavy dilution, the Nox conversion won’t happen, and I would expect a reaction similar to a lean or rich O2 situation in a gasoline application.

 

[TCDiesel]

The Water is only used to transport the Urea, the system use to measure the ammonia , that was removed in the T05 update, the Sensor was just used to detect ammonia NOT measure its Volume, their is NOTHING on the vehicle to detect its concentration (measure) level.