Admin June 19, 2018

If you’re in the trucking industry, or you own or operate other over-the-road or off-road vehicles that use diesel engines, there are specific governmental regulations you are required to adhere to. One of them is ensuring that the emissions from those engines are in compliance with the guidelines and regulations from the Environmental Protection Agency.  That sounds like a daunting task. However, it’s easily accomplished by using DEF, or Diesel Exhaust Fluid.

DEF is a urea-based solution that diesel engine operators use to reduce the harmful nitrogen oxide emissions we so often hear about in the news. By diesel engine operators injecting DEF into their exhaust, they are helping to neutralize nitrogen and oxides. To ensure it’s reducing those emissions enough to comply with EPA regulations and the like, operators need to keep track of how much DEF they’re using and make sure that, if they’re running low, they know where the nearest DEF distributors are.

How Can You Be Sure How Much DEF You Need?

There are several DEF usage calculators on the internet a person can use to see how much DEF they’re using. It’s just a matter of plunking in the numbers the calculator is asking for.  They usually ask for the number of diesel vehicles you’re running per year and the average number of miles driven by them, along with the average gas mileage and, depending on the calculator, there may be a couple other pieces of information. Once the numbers are entered in, bingo, you’ve got your magic number.

Short of using a DEF usage calculator, a general rule of thumb is that one gallon of DEF is needed for every 50 gallons of diesel fuel you put in a vehicle. Each gallon will last, on average, somewhere between 300 and 500 miles. Of course, if you’re operating in colder climates, you should estimate a little higher on your use because DEF becomes slush at 28 degrees and freezes at 11 degrees.

Where Are the DEF Distributors Located?

If you’re a driver and typically make the same run, you probably have a good idea of where DEF distributors are located along or near your route. If not, a quick Internet search of “diesel exhaust fluid near me” will likely yield you more hits than you can imagine.

There is one other way you can avoid running low or out of DEF. Your company can set up, with any one of several DEF distributors, a mobile fueling or packaged product delivery system to ensure you always have enough DEF on hand.

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