What is Diesel Exhaust Fluid?

Diesel Exhaust Fluid (DEF) has emerged as the leading method to control diesel engine NOx emissions. Since 2010, federal regulations under the Clean Air Act have set strict limits on emissions for new diesel vehicles.

DEF (diesel exhaust fluid) is a high-purity solution of 32.5% automotive grade urea and 67.5% pure de-ionized water that works with Selective Catalytic Reduction (SCR) emission-reducing technology to reduce NOx emissions. DEF is an odorless, colorless, non-flammable and nontoxic solution that is harmless to people, equipment and the environment.

DEF is injected into the exhaust system of SCR-equipped diesel engines and breaks down NOx molecules into harmless nitrogen and water.

Trust MacEwen with Generations of Experience

With generations of experience serving bulk customers, MacEwen is uniquely positioned as a Canadian leader in the Diesel Exhaust Fluid industry. Serving a range of customers from national fleets to local truck dealerships, MacEwen offers premium customer service and the highest quality Diesel Exhaust Fluid available for bulk orders and packaged DEF.

MacEwen also offers a full range of solutions including the installation of customer bulk systems at your location.

MacEwen sells only top-quality, ultra pure AiRx DEF, certified by the American Petroleum Institute. MacEwen is uniquely positioned to offer you the best diesel exhaust fluid supply and systems available in Canada.

For more information about bulk diesel exhaust fluid, please click here