Dodge cummins 5.9 or 6.7 ?
I'm looking to buy a newer truck for hauling a 5th wheel. For those who have had both 5.9 & 6.7 engines, which do you think is better and why? Right now I'm leaning towards the 5.9, because it has a l...
Forum Discussion
Emissions Reading
I was leery of the emissions setup on the pre-SCR 6.7s because of excessive EGR and DPF regens. I think the newer ones just run a lot cleaner with the addition of DEF, and get better mileage too.
Now you're comparing the early 6.7 to the 5.9, which is a whole different question. The newer trucks are nicer, have more power and a 6 speed, but the emissions are more problematic. If you aren't in an emission testing area you do have the option of deleting a 6.7 to avoid those issues, but there are legal and environmental drawbacks to that. Nonetheless, a lot of guys do it once out of warranty. VW even does it for you without voiding the warranty...
I was leery of the emissions setup on the pre-SCR 6.7s because of excessive EGR and DPF regens. I think the newer ones just run a lot cleaner with the addition of DEF, and get better mileage too.
Now you're comparing the early 6.7 to the 5.9, which is a whole different question. The newer trucks are nicer, have more power and a 6 speed, but the emissions are more problematic. If you aren't in an emission testing area you do have the option of deleting a 6.7 to avoid those issues, but there are legal and environmental drawbacks to that. Nonetheless, a lot of guys do it once out of warranty. VW even does it for you without voiding the warranty...
