Diesel exhaust fluid, commonly known as DEF, is a critical part of modern diesel vehicles. It helps reduce harmful emissions and allows engines to meet strict environmental standards without sacrificing performance. Because DEF systems are relatively new compared to traditional engine components, there are often questions about how they work and what maintenance involves. At Custom T Repair, we’re happy to answer your questions about DEF services in Springfield, AR. 

What Is Diesel Exhaust Fluid and What Does It Do?

Diesel exhaust fluid is a mixture of purified water and urea designed to reduce nitrogen oxide emissions from diesel engines. It is stored in a separate tank and injected into the exhaust stream. When heated, the fluid breaks down harmful gases into harmless nitrogen and water vapor. DEF does not affect fuel combustion directly, but it plays a major role in keeping emissions low and ensuring compliance with environmental regulations.

How Often Does DEF Need to Be Refilled?

DEF consumption varies depending on vehicle type, engine size, and driving conditions. Many vehicles use DEF at a predictable rate, often requiring refills during routine service intervals. Some dashboards display DEF levels and provide warnings when levels are low.

What Happens During a DEF Service?

A DEF service typically includes checking fluid levels, inspecting the DEF tank, and examining related components for leaks or contamination. Technicians may also inspect the injector and sensors that monitor the system’s performance. In some cases, the system may need cleaning or recalibration if warning lights appear. Proper handling is important because DEF can become contaminated if exposed to dirt, fuel, or other substances.

How Can I Maintain My DEF System?

Using high-quality DEF and storing it properly helps maintain system performance. Always keep the DEF tank sealed and avoid mixing it with other fluids. Following recommended service schedules and responding quickly to warning messages can prevent bigger problems. Keeping the system clean and properly filled helps ensure your diesel vehicle continues to run efficiently and meet emissions standards.

Where Can I Find DEF Service in Springfield, AR?

For DEF service in Springfield, AR and the surrounding area, contact Custom T Repair at (501) 208-4730. Our local diesel mechanics can expertly handle your diesel truck repair and maintenance needs in the greater Springfield, AR area!