What can you use instead of DEF fluid?

DEF is urea or otherwise known as aqueous ammonia. Windshield washer fluid that contains ammonia will do in a pinch.

Can you put water instead of DEF fluid?

Subject: RE: Anyone replace DEF with water? Water won't hurt the system but it will de-rate you pretty quick. ECM compares NOx values pre/post, if conversion is low it will start throwing codes and will eventually derate.

Can you use urine instead of DEF?

Following the deductive reasoning that urine has urea in it, therefore, urine + water = DEF is 100% wrong, and will cause you a myriad of expensive mechanical problems. The urea found in urine is not in the proper concentration needed for DEF, nor is it of a sufficient level of purity, in either urea or water.

Can you use urine instead of DEF fluid?

DEF and urine are not interchangeable, and if you do decide to pee in your DEF tank, you could be facing some hefty repair bills. Because of the other compounds found in urine, peeing in a DEF tank could ruin the filters and the whole SCR system if used too often.

What to do when you run out of DEF fluid?

In a best-case scenario, running out of DEF simply means refilling the tank and restarting your machine. If you have DEF nearby, you could be back to work within minutes.

How do you make def fluid?

From a strictly chemical disposition DEF is a mixture of 67.5% deionized water and 32.5% urea. Urea is a compound in Nitrogen that turns to ammonia when heated and is used in a variety of industries. Urea is technically derived from a byproduct of urine but for mass production purposes it is synthetically made.

Can you bypass DEF fluid?

If you're thinking of bypassing any of your diesel's emission controls, remember that that it's highly illegal and the fines can be steep. The chances of getting caught may be low, but the consequences are costly.

Can you dilute DEF?

The DEF will be diluted by the added water, but depending on the ratio of water to DEF, the solution may still contain enough urea to deal with the NOX via an increase in the injection rate.

Is Blue DEF cow urine?

The short answer is no. Commercially available DEF does not contain any animal urine.

Can I pee in AdBlue tank?

But sadly, the answer is "no". A modern clean diesel car will recognize that your pee is not the right stuff. AdBlue solution has a far higher concentration of urea--32.5%--mixed into deionized water.

How do they make urea for DEF?

DEF is a mixture of (typically) 2/3 deionized water and 1/3 urea. It's carefully regulated by the American Petroleum Institute. Technically, urea is derived from one of the byproducts of urine. But it's synthetically made, so no cats are ever harmed in the production of the fluid.

How does urea help diesel?

The urea solution is held in a separate storage tank and injected as a fine mist into the hot exhaust gases. The heat breaks the urea down into ammonia—the actual NOx-reducing agent. Through a catalytic converter, the ammonia breaks the NOx down to harmless nitrogen (N) gas and water vapor.

Can you run a diesel without DEF?

Can You Run A Diesel Engine Without Def? There is no way modern trucks will run without DEF. Drivers of diesel trucks therefore need to check their fluid levels frequently in order to make sure they're as good as possible. It is everyone's responsibility to reduce emissions.

How do you winterize a DEF fluid?

Push the DEF pump switch to "Trailer Fill". Allow the pump to run while squeezing the nozzle handle for 30 seconds. Unhook the quick coupler from the nozzle WHILE THE PUMP IS RUNNING. This will evacuate the DEF fluid from the nozzle.

What is the best DEF fluid?

The best diesel exhaust fluid meets the Environmental Protection Agency's standards and is free from impurities. Valvoline's Premium Blue Diesel Exhaust Fluid is a top choice because it is compatible with all selective catalytic reduction systems and meets the EPA's near-zero nitrogen oxide emissions levels standard.

Can you fill DEF while engine is running?

No, simply run the tank as empty as possible before refilling. Diesel Exhaust Fluid (DEF) is a pure chemical, so your bulk storage tank does not need to be cleaned out unless it is contaminated.

What happens if you put DEF in your diesel tank?

What happens if DEF is put into the fuel tank? Typically, if DEF is introduced to the fuel tank, the truck will run poorly or even fail to start. Repairs to the fuel system can be costly. Components that have been contaminated with DEF will show crystallization after drying for a few hours as seen in Photo 1.

What is a Qls sensor?

The commercial vehicle industry is experiencing unprecedented supply shortages on some necessary components. One such component is the DEF Quality Level Sensor (QLS). Due to this shortage, trucks experiencing a QLS failure may not have a new sensor available for repair.

Where is the DEF level sensor?

A DEF quality sensor is mounted on the side of the DEF tank. This sensor detects the Urea concentration in the DEF to confirm it is acceptable for effective dosing (approximately 32.5% Urea).

What is a DEF quality sensor?

DEF Quality Sensor

The quality sensor alerts the user if the solution deviates from the acceptable concentration range or if there are any contaminants present in the DEF tank. DEF concentration directly influences SCR system performance.

Can you disable DEF?

Well-Known Member. You can simply have a tuner turn off the DEF system and you will no longer use any. No need to remove any pipes or EGR.

Is there a DEF filter?

The Diesel Exhaust Fluid (DEF) Filter offers a convenient, effective way to deliver clean DEF into your equipment. If DEF is not filtered, urea crystals and other contaminants picked up during storage and handling can cause malfunction of the SCR system.

What does Blue def?

BlueDEF® Diesel Exhaust Fluid is a mixture of high purity synthetic urea and deionized water that is used in Selective Catalytic Reduction (SCR) systems in diesel vehicles. DEF is used to help convert NOx to harmless nitrogen and water.

How do I keep my DEF from freezing?

Storing your truck in a heated or insulated garage during cold periods can help prevent your DEF from freezing. Likewise, an insulated tote blanket can help prevent freezing.