What Is Diesel Exhaust Fluid and Why Is It Important?
The dependability of diesel engines is unmatched, with a significant torque output, they can withstand long periods of heavy towing and hauling, making them a common choice for those who rely on their vehicles for taxing labor and storage. But compared to gasoline engines, the maintenance required on diesel engines involves an entirely different approach. Learn all about diesel exhaust fluid and what it does.
What is Diesel Exhaust Fluid (DEF)?
Diesel Exhaust Fluid (DEF) is used in almost every diesel-powered engine. DEF is a mix of deionized water and urea. This combination converts the harmful nitrogen oxide emissions from diesel engines into safe water and nitrogen gas. The chemical reaction triggered by DEF reduces the volume of nitrogen oxide that enters the atmosphere. DEF is stored in a separate tank and is injected into the exhaust system of diesel vehicles to help reduce harmful emissions. This is called a selective catalytic reduction system (SCR), as DEF is only added to the exhaust system as needed.
Why Do I Need It?
DEF is not only a good idea to have in your diesel vehicle, it’s a requirement. In 2010, the EPA released the Diesel Emission Reduction Act (DERA), which required all new diesel vehicles to feature an SCR system. SCR systems remove up to 90% of the pollutants from diesel exhaust vapors, significantly reducing the negative effects of nitrogen oxides in the area and the atmosphere preserving the environment.
What Happens if I Run Out of Diesel Exhaust Fluid?
If your vehicle runs out of diesel exhaust fluid, you will not be able to start or drive the vehicle. If it happens while driving, your vehicle will either give you ample time to stop or slowly limp causing significant power reduction and speed limitations until you can get it refilled.
That might sound scray, but your vehicle will most likely give you more than enough warning before it gets to this point. When you see a low DEF warning on your dashboard, you should refill it immediately to avoid allowing it to run critically low.
How Do I Get DEF?
Diesel exhaust fluid is available at most gas stations, auto parts stores, and larger department stores. DEF will usually come in quantities of a few gallons and should last you a while. However, it’s important to ensure the fluid you are using is not expired, as DEF can lose its effectiveness after a year of sitting.
Diesel Service and Repair in Carlsbad
Diesels can withstand long periods of heavy towing and hauling, making them a common choice for those who rely on their vehicles for taxing labor and storage. Don’t wait around, trust the expert technicians at Carlsbad Auto Service! Whether you drive a Powerstroke, Cummins, Duramax, or any other diesel vehicle, our team has extensive training on all types of diesel work and can help you keep yours running as it should! Contact us by phone or schedule online today!