Diesel Exhaust Fluid Corrosive
DEF Quick FAQ's
Q: Is DEF corrosive?
A: Yes, Diesel Exhaust Fluid is corrosive to most metals. Stainless steel is the only metal used in the manufacturing of all DEF pump equipment.
When we (at work) first started getting DEF trucks, a guy put DEF in the cooling system... It ate through every piece of aluminum it contacted...
Monkey, pilot of a Great Dane hauler,
2015 Silverado 2500 Duramax/Alison 4x4 CrewCab 2016 Cougar 28SGS