Def is a carefully blended aqueous urea solution made with 32. 5% urea and 67. 5% deionized water.

Ammonia is an essential requirement to eliminate nox.

Weboct 4, 2012 · if you put water in an empty def tank, there will be no urea injected into the exhaust to convert to ammonia.

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In conclusion, def tanks.

Webdec 19, 2023 · no, you should not put water in a diesel exhaust fluid (def) tank.

Replacing the def fluid with water will prevent the formation of ammonia, which is essential to reducing nox emissions.

Webaug 30, 2023 · simply put, no.

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