Most diesel truck owners understand how to put diesel exhaust fluid (DEF) in their trucks. However, some make the mistake of getting DEF in their fuel tank instead of the dedicated DEF tank. As the ...

Diesel Exhaust Fluid (DEF) contamination with Fuel System Icing Inhibitor (FSII) is a very serious threat to the aircraft fueling system. There have been multiple incidents where DEF was mistaken for ...