The modern world relies on diesel fuel for everything from personal transportation ... anti-pollution laws – all new diesels must use DEF or diesel exhaust fluid in conjunction with a ...

As said port is often located next to the one meant for fuel, it can be easy to become confused and add DEF directly into the diesel tank. The consequences of such a mix-up can be quite dire ...

Under certain conditions, the water in DEF can evaporate, leaving behind white crystal urea deposits. Over time, these crystals can build up, clogging system components and interfering with normal ...