News Room

Everyone who owns or operates heavy equipment has likely heard of Diesel Exhaust Fluid, or DEF. Yet not everyone is fully aware of what exactly it is, what it does, and how it fits into an existing operation. Fortunately, for every question about DEF, there’s an answer.

Here are the 10 most frequently asked questions - and answers, regarding DEF, or head here for more DEF information. 


For more information on diesel exhaust fluid, including ordering DEF, portable dispensing units, pumps and bulk fluid programs, contact your local RDO Equipment Co. store.