Fueling Houston Since 1980

Diesel Exhaust Fluid or DEF is an emissions control liquid required by newer diesel engines. It is injected straight into the exhaust stream and never added to the diesel fuel itself. It is a non-hazardous solution of 32.5% urea in 67.5% de-ionized water. DEF is clear and colorless, and looks exactly like water with a slight odor like ammonia. DEF is used in by Selective Catalytic Reduction or SCR technology to remove harmful emissions from diesel engines. DEF is sprayed into the exhaust, breaking down NOx gases into nitrogen and water using an advanced catalyst system.

In January 2010, the U.S. Environmental Protection Agency brought in new emissions standards requiring medium and heavy-duty vehicles to significantly reduce engine emissions, particularly NOx and particulate matter. Vehicle manufacturers use SCR to meet these standards.

DEF is available with a variety of storage and dispensing methods. Storage options consist of various size containers inluding Totes and Bottles or Jugs.