DEF Shortage ?

I was working for Navistar when they did the road testing to prove DEF was worthless. Which we did. Feds didnt care. Told them that if Volvo, Paccar and Freightliner have to use it, so do you. Then fined them $3000.00 per every one of their vehicles that was on the road and not using it. Cost the CEO and many others, their jobs. Me included.

This was the start of the downfall and the main reason Volkswagen owns Navistar today.