Why you must never urinate on your DEF tank

Why you must never urinate on your DEF tank

Why You Must Never Urinate on Your DEF Tank


¡Do not play alchemy! We have noticed that the question “¿Can I urinate into my DEF tank?” is being more common in Google searches. Despite the fact that there is a significant amount of information about it that dates back to 10 years ago, including on our blog. Since we are manufacturers of the DEF Noxguard brand, we have published several posts about the myths surrounding DEF. Myths that incidentally end up costing  thousands of dollars in repairs to diesel units.

Yes, we are quarantined by Covid19 and it is recommended that we continue so. Because of the restrictions on the travel network due to the virus and the challenge this represent for the supply chain, buying some items is becoming more complicated. So people, especially in rural areas, are inclined to use homemade solutions, which is why we would like to emphasize:


DEF is composed of 67.5% deionized water and 32.5%  high purity ​​synthetic urea, while human urine has a different content of urea and other compounds that will damage the SCR system.


Would you put cooking oil in the lubricant reservoir of your engine or beer instead of antifreeze? Sounds absurd, correct? That’s how absurd the idea of ​​urinating in the DEF tank is. Do not risk the life of your engine. DEF is a specific substance, manufactured under quality processes and must be API certified, as is the case with our product Noxguard DEF. We have ample information on this topic in our blog.


  • Dean Amati Publicado 2021-03-06 20:53

    Hi! This is my first visit to your blog! We are a collection of volunteers and starting a new initiative in a community in the same niche. Your blog provided us useful information to work on. You have done a wonderful job!|

  • Judi Ritzert Publicado 2021-03-06 23:54

    Hello, its fastidious article regarding media print, we all know media is a great source of information.|

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