What is Diesel Exhaust Fluid? Scott Petroleum uses an API-certified, Diesel Exhaust Fluid (DEF) of technically pure urea mixed withdemineralized water that is designed to meet the specifications of DIN 70070:2005 and ISO 22241-1:2005 forNOx abatement technologies. TerraCair is used in Selective Catalytic Reduction (SCR) systems to change theOxides of Nitrogen (NOx) emissions in diesel exhaust to nitrogen and water vapor. Nitrogen makes up about78% of the air we breathe every day.

Is DEF usage required by law? YES, in those diesel engine vehicles equippedwith SCR products after January1, 2010, DEF isrequired for emissions after treatment.

What are the benefits of using DEF? Diesel engine vehicles equipped with SCR willhave a separate tank to hold the DEF.Those vehicles using our DEF not only meet the2010 tailpipe standard, they also deliver significantfuel economy.It’s good to know you’re cleaning the air whileincreasing your Miles Per Gallon.

Why choose Scott’s DEF over other brands? TET manages the complete process from the gas fields to the vehicle tank. TET is the onlymanufacturer who controls and oversees the entire distribution chain to ensure that the product qualitydelivered to the customers tank complies with ISO 22241.