Diesel exhaust fluid, or DEF, is a key component in lowering pollutants emitted from diesel engines, helping to improve efficiency and reduce emissions.

Rislone's DEF Crystal Clean dissolves crystalized urea so your DEF system works as it should.

Field Work Interruptions: If a tractor runs out of DEF or if the system breaks down, under the now-defunct previous guidelines engine power was greatly reduced, which is known by many farmers as ...