Diesel Exhaust Fluid
What is Diesel Exhaust Fluid and How Does it Work?
Diesel exhaust fluid is a mixture of high purity synthetic urea and purified water, used in Selective Catalytic Reduction (SCR) systems on diesel engines. SCR is a leading technology that meets the 2010 EPA mandate to reduce levels of oxides of nitrogen (NOx) emitted from diesel engines. SCR systems use diesel exhaust fluid and a catalytic converter to significantly reduce NOx emissions. Diesel exhaust fluid is a nontoxic, nonpolluting, nonhazardous and nonflammable solution. It is carried on board SCR-equipped vehicles in a designated tank. Small quantities of diesel exhaust fluid are injected into the exhaust stream to mix with exhaust gases to form harmless nitrogen and water.
Grease Monkey and Diesel Exhaust Fluid
For the SCR system to operate properly, the vehicle’s diesel exhaust fluid level needs to be replenished periodically, like fuel, but not as often. Many manufacturers recommend that the diesel exhaust fluid tank be filled at the same time as the oil change service interval, but diesel exhaust fluid usage does vary by drive cycles and by vehicle. Many Grease Monkey centers carry diesel exhaust fluid as a convenience to customers who drive SCR-equipped vehicles.
How Often to Replace Diesel Exhaust Fluid
Warnings will display on the instrument panel when the diesel exhaust fluid level is getting low and should be refilled. You will lose noticeable horsepower if the diesel exhaust fluid level gets too low. Diesel exhaust fluid must be added to the designated tank to resume normal power.
*Diesel exhaust fluid is available at participating Grease Monkey locations.