Since 2010, Blue Sky has been providing the highest quality diesel exhaust fluid to satisfied customers throughout North America. Whether in vehicles large or small, on- or off-road, Blue Sky DEF is a trusted and environmentally responsible emission-control solution for diesel-powered engine operators everywhere. PURE QUALITY As any operator knows, the purity of diesel exhaust fluid is essential for allowing engines and selective catalytic reduction (SCR) systems to operate at their peak performance, while at the same time reducing harmful pollution. Produced using deionized water and our proprietary reverse osmosis water purification system that exceeds stringent ISO 22241 and American Petroleum Institute standards, Blue Sky DEF prevents SCR breakdown, reduces harmful nitrogen oxide emissions by 90% and even improves fuel efficiency by up to 8%. In short, Blue Sky DEF makes your engines run better and helps you protect the environment, all while allowing you to keep more of your hard-earned money in your pocket. CUSTOMIZED EXPERTISE Blue Sky is more than just a manufacturer of high-quality diesel exhaust fluid. We are the DEF experts. Our representatives work with you to develop customized fuel programs and strategies to meet your needs, regardless of whether you are in charge of a modest truck fleet, a large rail or marine business, a sprawling power generation station, or anything in between. With quantities ranging from bottle to bulk, we have the right solutions for you. RELIABLE SUPPLY CHAIN Of course, none of this matters if a supplier isn’t reliable. Once again, Blue Sky has you covered. With multiple manufacturing facilities throughout North America, our extensive distribution network means that we can provide a steady supply of DEF almost anywhere. As businesses increasingly expand their operations around the country, it is a comfort to know that the Blue Sky supply chain won’t be broken, no matter what the obstacle.