When did DEF become required ?
Thinking of upgrading to a DP. I want to avoid having to deal with DEF. What year models did it become a requirement ?
Forum Discussion
2006/2007 is the last model years for non-ULSD and non-DPF. The motors had to be made in 2006, but for some models (like my Fuso) they made all the 2007 model year motors in 2006. If you plan on going to Mexico or points further south, being able to take the non-ULSD becomes important.
