![Contaminated Def](https://img.forconstructionpros.com/files/base/acbm/fcp/image/2014/08/contaminated-def_11611227.png?auto=format%2Ccompress&q=70&w=250)
Over the past few years, handling diesel exhaust fluid has become a daily part of maintaining off-road equipment. It has become quite clear that there is a great deal of misinformation out there about the fluid – especially as it relates to its purity and its shelf life.