Pilot Flying J DEF Diesel Exhaust Fluid 2.5 gal

- Improve your fuel economy and reduce emissions in your diesel-run vehicle with Pilot Flying J brand Diesel Exhaust Fluid.
- Diesel Exhaust Fluid contains 32.5% highly pure automotive grade urea and 67.5% deionized water that is used in Selective Catalytic Reduction (SCR) systems on diesel engines.
- The solution chemically changes harmful nitrogen oxide (NOx) emissions from heavy-duty diesel vehicles that converts into harmless nitrogen gas and vapor.