BlueDEF Diesel Exhaust Fluid Synthetic Urea Deionized Water 2.5 Gallon (4 Pack)
- Mixture of 32.5 percent high purity synthetic urea and 67.5 percent deionized water.
- Helps convert nitrogen oxide into harmless nitrogen gas and water vapor for cleaner emissions.
- Improves fuel economy by up to 5 percent.
- Inject the fluid into your exhaust stream with a specialized dosing module.