Choosing the right diesel exhaust fluid for your truck, carrier or other diesel vehicle is essential for long engine life and improved fuel economy. That’s where Keller-Heartt and TerraCair come in. TerraCair is made by America’s leading manufacturer of DEF, and it’s easy to see why. This remarkable urea solution transforms toxic nitrous oxide emissions into harmless water vapor, making it an ecologically friendly alternative to other leading brands. With a formaldehyde-free formula and ultra-pure ingredients, TerraCair is the ideal solution for your fleet. At Keller-Heartt, we carry TerraCair DEF in 330-gallon totes for your convenience. When you’re managing a large number of diesel vehicles with SCR systems, you need to have this high-tech DEF on-hand so you’re ready for anything. Because TerraCair meets or exceeds all of the standards set forth in AUS 32, DIN 70070 and ISO 22241 purity and concentration standards, you’ll always be in compliance with federal regulations. At the same time, you’ll be lengthening your engine system’s life and committing to improving air quality. TerraCair diesel exhaust fluid has an innovative formula that includes a urea concentration of 32.5 percent, give or take 0.7 percent. There’s no toxic formaldehyde in this DEF solution, and it includes fewer than 0.5 ppm of phosphates, calcium and iron. Even better, it contains 0.2 ppm of copper, zinc, nickel and chromium. Other metallic elements, such as aluminum, clock in at less than 0.5 ppm as well. Because TerraCair’s manufacturer, Terra Environmental Technologies, self-sources the urea for the formula, it’s quality-controlled from the oil field to your tank. This helps to ensure that it’s extremely high-quality. Its special formula achieves nitrous oxide reductions of more than 90 percent. Keller-Heartt is proud to carry large, 330-gallon TerraCair diesel exhaust fluid. We even offer free shipping within the Chicago area.