08/31/2026
If you had asked me about D.E.F. (Diesel exhaust fluid) before today, I would have given you an honest answer about it being a gimmick to control pollution. Now if you ask me about D.E.F. you probably will hear alot of explicit language about it and its sensor being a gimmick. I will not tell you the color of the tractor pulling me up my driveway because of a sensor that caused the motor to derate.