What is Diesel Exhaust Fluid (DEF)?

Uses, FAQs, and Everything You Need to Know!

DEF hudson valley NY If you operate a diesel fleet, such as commercial trucks, vans, or busses, you probably know you need diesel exhaust fluid to make sure they meet emission standards. But do you know all the benefits of this fluid?

What is Diesel Exhaust Fluid?

Diesel exhaust fluid—also known as “DEF”—is made from a blend of <32.5% urea and 67.5% deionized water. Originally, it was needed mainly to remove nitrous oxide from diesel exhaust to meet stricter standards set in 2010. Nitrous oxide is a greenhouse gas that contributes to climate change.

Now, diesel engines use a technology called selective catalytic reduction (SCR) to remove almost all nitrous oxide (NOx) emissions. But DEF, which is injected into the exhaust pipeline, still delivers great benefits for your employees and your bottom line.

What are the Health Benefits of DEF?

Without DEF, there’s still particulate matter and small amounts of nitrogen oxide that can contribute to serious health problems, such as asthma, cardiovascular disease, and chronic bronchitis. DEF helps break down remaining traces of NOx gases into harmless nitrogen and water. That’s important for your employees who are exposed to diesel exhaust.

How Does DEF Benefit Your Business?

Because it removes particulate matter after combustion, it means your vehicles have more power. It also keeps maintenance and repair costs down. That also helps extend lifespan and improve mileage—which translates into savings of as much as 5% in fuel costs.

How Much DEF Do I Need?

On average, for every 50 gallons of diesel fuel used, you will need one gallon of DEF. But variables such as the type of vehicles you operate, and even the weather, can affect how much you’ll need. The experts at Depew Energy can work with you to better determine your appropriate DEF needs.

Does DEF Require Special Storage or Handling?

DEF is non-toxic and safe to handle, but the urea content can be corrosive. It should be stored in a cool, dry place, ideally out of direct sunlight. Generally, it has a shelf life of about two years.

DEF will freeze when temperatures hit 12 degrees Fahrenheit or below, which can happen in winter here in the heart of the Hudson Valley during the winter. Usually, the heat of the engine is sufficient to melt it and ensure smooth operation.

Where Can I Get DEF?

The commercial fuel experts at Depew Energy have 20 years of experience working with local businesses throughout the Hudson Valley. We understand your fleets, and we understand your business needs when it comes to commercial fleet fueling. We sell ArmorBlue DEF and will work with you to make sure you have everything you need to keep your fleet on the road!

Contact us today to find out more about our diesel exhaust fluid supply, and how we can benefit your commercial fleet.