Lake Forest, IL, January 22, 2013 – Prestone Products Corporation, a leading manufacturer of antifreeze/coolant, cooling system flush/cleaners and other performance chemicals for the North American vehicle market, is proud to announce the availability of its new line of Prestone Command® Diesel Exhaust Fluid (DEF).

Prestone Command® DEF is a liquid reducing agent that has been developed for use in all diesel engines that are equipped with a Selective Catalytic Reduction (SCR) system. SCR is an emission-control technology that injects a precise amount of DEF into a diesel-powered vehicle’s exhaust stream, which in turn converts any nitrogen oxide (NOx) that is present into harmless nitrogen and water vapor that is subsequently released safely into the atmosphere. Some estimate that DEF demand will reach 1.3 billion gallons annually in the United States by 2019.

Prestone Command® DEF is a colorless, odorless, non-toxic and non-flammable liquid solution consisting of 67.5% demineralized water and 32.5% high-quality automotive-grade urea. It meets all API and ISO 2224-1 manufacturing specifications. DEF will corrode certain metals, such as aluminum, copper and brass, so it must be used and stored with dispensing equipment and tanks that are made of stainless steel or high-density polypropylene. Prestone Command® DEF is available in 1- and 2.5-gallon (3.78- and 9.45-liter) containers, as well as 55-gallon (208.2 liter) drums and 330-gallon (1,249.19 liter) totes.

This is the first DEF launched by Prestone Products Corporation, bringing you the high quality product and technical expertise that has built the business since 1927. Prestone Command® DEF is an excellent solution, helping to ensure worry free engine life, along with new Prestone Command® Antifreeze/Coolant products.

Prestone Command® Diesel Exhaust Fluid will be on display at the upcoming Heavy Duty Aftermarket Week (HDAW) 2013 Trade Show, which will be held from Jan. 21-24 at The Mirage Hotel & Conference Center in Las Vegas, NV.

For more on Prestone Command® antifreeze/coolant, please visit