40 Diesel exhaust fluid (DEF) is required by all recently built diesel engines. No DEF and trucks don’t move and goods can't get through. posted 2 years ago by aslan_is_0n_the_m0ve 2 years ago by aslan_is_0n_the_m0ve +40 / -0 10 comments share 10 comments share save hide report block hide replies
It’s the railroads that are causing the shortage. I watched a senate hearing where the ceo of the largest def fluid company payed it all out there.