Joined 01/06/2020 - 13 Posts
Answered By AOPA
What is DEF contamination in Jet-A?
Joined 06/02/2017 - 44 Posts
AOPA Staff Answer
Diesel Exhaust Fluid (DEF) is a colorless additive used with diesel engines to reduce emissions. It has mistakenly been added to jet fuel on at least three occasions.