N
TruthVerse News

What is the percentage of automotive grade urea in AdBlue?

Author

Christopher Duran

Updated on March 19, 2026

What is the percentage of automotive grade urea in AdBlue?

The automotive urea AdBlue, also known by the generic name Diesel Exhaust Fluid (DEF), is the registered trademark for AUS32 (Aqueous Urea Solution 32.5 %). AdBlue is used as a reagent to reduce the harmful emissions from the internal diesel combustion engines.

Also know, what percentage of Def is urea?

32.5 percent

Likewise, how much AdBlue should a car use? Typical consumption is around a litre of AdBlue every 600 miles. But it could be as high as a litre every 350 miles. Tank size varies too, so you could need to refill somewhere between 3,000 and 12,000 miles depending on the car and your driving style.

Considering this, what is automotive grade urea?

The Automotive Grade Urea Sector Group (AGU) is an association of European urea producers dedicated to the responsible usage of NOx reduction agent AUS 32 (aqueous urea solution, abbreviated “AUS 32”) specified in the ISO standard 22241 and AUS 40 (aqueous urea solution, abbreviated “AUS 40”) specified in the ISO

Can you pee in your DEF tank?

Sensors in the urea tank monitor the concentration of urea. If you put in the wrong stuff, from pure water to windshield washer fluid to human urine, the car won't run.

Is a def delete illegal?

In the U.S., the EPA Clean Air Act prohibits anyone from tampering with an emission control device on a motor vehicle by removing it or making it inoperable. Canada has essentially the same law under a different name, the Canadian Environmental Protection Act. DEF tampering is illegal, yet it happens.

What year did dodge start using def?

2013

How much DEF is left when light comes on?

Know now that one could still travel over a 100 plus miles after the light comes on which we just shouldn't have to get to the point of having the light on. 116 gallons of diesel @ a 4% ration of DEF to fuel = 4.64 gallons of DEF. Therefore, DEF goes 20 times further than 1 gallon of fuel.

Can I delete my def system?

A DEF Delete Service for your Cummins, Duramax, or Powerstroke diesel engine from Revolution Motors will remove this system so your truck is running at peak efficiency and performance. Trucks with the DEF delete install can improve fuel efficiency by up to 30%.

Is DEF fluid corrosive?

Good news, Diesel Exhaust Fluid is classified as a non-hazardous material. However, it is corrosive to most metals. Stainless steel is the only metal used in manufacturing DEF pump equipment.

Does def brand matter?

DEF is just a fancy name for a mixture of water and a chemical called urea. There's really no magic behind it, which means that any brand of diesel exhaust fluid is going to work just fine in your car. For more information on DEF fluid, chat with a knowledgeable expert at your local NAPA AUTO PARTS store.

How do I know when my DEF tank is full?

Checking and topping off your diesel's exhaust fluid level is a simple but important part of your routine vehicle maintenance. If your diesel runs completely out of DEF, a red warning indicator will light up and the vehicle's speed will be drastically reduced.

What Urea is used in AdBlue?

The liquid solution is made up of 32.5% urea and 67.5% de-ionised water. You may be wondering, where does the urea in AdBlue come from? Well, AdBlue urea is made by heating up synthetic ammonia and carbon dioxide.

Is Ad Blue urea?

AdBlue is actually a synthetic urea which works by turning nitrogen oxide into harmless steam and nitrogen. It is stored in a tank, like fuel, and an increasing number of diesel vehicles, but typically those with larger engines, are being fitted with AdBlue tanks.

Why Urea is used in trucks?

Urea SCR cleans the exhaust after combustion. The urea solution is held in a separate storage tank and injected as a fine mist into the hot exhaust gases. Through a catalytic converter, the ammonia breaks the NOx down to harmless nitrogen (N) gas and water vapor.

Does urea corrode metal?

Although pure urea solutions are not very corrosive, ammonium carbamate (an intermediate in urea synthesis) is a highly corrosive liquid. For example, carbon steel in contact with carbamate solutions will corrode at a rate of more than 900 mm/year.

What urea is in def?

Diesel Exhaust Fluid (DEF) is a non-hazardous solution, which is 32.5% urea and 67.5% de-ionized water. DEF is sprayed into the exhaust stream of diesel vehicles to break down dangerous NOx emissions into harmless nitrogen and water.

Where does urea come from?

Urea is the chief nitrogenous end product of the metabolic breakdown of proteins in all mammals and some fishes. The material occurs not only in the urine of all mammals but also in their blood, bile, milk, and perspiration.

What is urea used for?

Urea is used to treat dry/rough skin conditions (e.g., eczema, psoriasis, corns, callus) and some nail problems (e.g., ingrown nails). It may also be used to help remove dead tissue in some wounds to help wound healing. Urea is known as a keratolytic.

Who invented AdBlue?

Sean Cole's COSSU machine, which dispenses 'AdBlue' fluid to clean diesel exhausts of poisonous gases, is designed for use at petrol stations and car parks.

Can I refill AdBlue myself?

Yes, you can top up with AdBlue®yourself. Every TOTAL service station sells standard 5L and 10L cans of AdBlue®. TOTAL is also gradually deploying special pumps for light vehicles. Never top up with a pump for heavy goods vehicles.

Can you overfill AdBlue tank?

Do not overfill the AdBlue reservoir. This can create a vacuum inside the tank that prevents the AdBlue from being injected into the exhaust initially and this could cause an engine management light to illuminate.

Is AdBlue made from pigs urine?

Is AdBlue® made from pigs' urine? AdBlue® is a synthetic, highly purified solution of urea and demineralized water NOT pigs urine. Whilst the chemical urea is in pigs' urine, it is found in much lower concentration alongside many other elements.

Are there different grades of AdBlue?

AdBlue is a proprietary name, like Hoover and iPhone: i.e. there are not different types or brands of AdBlue, though there may at any time be different brands selling other urea-based solutions that perform the same function. AdBlue is stored in a tank in the vehicle, and is injected into the SCR system as required.

Can I buy AdBlue at petrol stations?

You can find portable containers of AdBlue in the majority of filling stations, at the majority of appropriate retailers and the big branded online platforms too.

Do all diesel cars need AdBlue?

Many diesel cars registered after September 2015 use AdBlue to reduce emissions. In general, if you own a Euro 6-compliant diesel Audi, BMW, Citroën, Jaguar, Land Rover, Mercedes-Benz or Peugeot, it's likely to use AdBlue technology. There's often a clue in the car's model name, which may have 'Blue' or 'SCR' in it.

Is AdBlue poisonous?

It is a non-toxic, non-flammable, odourless and biodegradable substance making it the ideal solution in an increasingly environmentally-conscious climate. Since May 2018, AdBlue systems are now checked as part of a cars MOT.

How big is an AdBlue tank?

1,000 litres

How do I reset my AdBlue warning?

Fill the tank. Turn the ignition on, don't start the car. Leave ignition on for 30 seconds or so. Warning should clear.

Does AdBlue Crystallise?

Generally, the working pressure of air-assisted urea injection is relatively high, so it may occur that the nozzle valve needle is not closed tightly, resulting in the low exhaust temperature stage of the work still working, AdBlue® can not be hydrolyzed at high temperature so as to crystallize rapidly.

How do you clean AdBlue?

If small quantities of AdBlue® come into contact with the vehicle's paintwork, for example, wipe them off and rinse the area with water as needed. If you spill AdBlue® on your clothes and/or hands, just rinse thoroughly with clear water.

How do you store AdBlue?

AdBlue should ideally be stored within a temperature range between 0 and 30°C, and kept protected from direct sunlight. It should be properly sealed when it is not being used. It is possible for AdBlue to freeze at -11°C, so it is important that you use a storage area that is not below this temperature.

How do you check quality of DEF fluid?

  1. First, you can examine your DEF by visually checking for clarity, ensuring there are no contaminants or debris floating in the fluid.
  2. Second, you can use a handheld DEF Chek Tester or purchase an electronic handheld refractometer like the Misco DEF-201 at a cost of around $360.
  3. 0 Discs < 29% Urea Concentration.

Related Documentation

Can you reduce the auction time on eBay?

What did they call money in the 1700s?

How do I format code in Excel?

What is the percentage of automotive grade urea in AdBlue?