Distilled Water In Def Tank

The purity of the urea def is critical for the scr process to work.

Distilled water in def tank. Def is made from deionized water and a very pure form of urea. Naturally i wouldn t recommend that. Def is mostly water about 2 3. Failure to maintain 32 5 urea concentration may result in injectors becoming clogged loss of fuel efficiency failure to meet epa exhaust requirement.

I ve though about that solution myself when my engine derated when i was very low once. My def was at about 1 3 rd of a tank i filled it up with distilled water took about 2 gallons drove it maybe 50 miles or so went to start it i get a cel and a message wrong def fluid detected contact dealer i connect my code scanner the code is unknown and not removable with my scanner. So in an emergency you could use a mixture of 1 3 pee and 2 3 distilled water. It is a critical component of scr technology which has been widely accepted as the most effective means to reduce nox and meet emission requirements set forth by the epa in its tier 4 standards.

Basically def is 33 urea and 67 deionized water. But i d believe that using that would be better than trying to use simply water. When i installed my sofaking tune i was told you can use distilled water rather than def. Yes urea is found in urine quit giggling please but this is a refined form of the compound and is mostly used in the.

I ve been that low before but this time i made the mistake of shutting off the engine. If the def concentration does not meet this specification drain the tank flush the tank with distilled water and fill the tank with new and or known good def. Diesel exhaust fluid def is a non hazardous solution comprised of 32 5 percent urea and 67 5 percent ionized water.