DEF diesel engines
Hi, I was looking at a few used DPs and noticed one was listed as non- DEF engine. Can I get some opinions on the advantages or disadvantages of getting an older non-DEF engine ? I am only slightly aw...
Forum Discussion
Mr.Mark wrote:
Carringb, our 2008 Monaco Dynasty had the Particulate Filter and no DEF which was the second year that the PF was required.
We drove our 425 HP Cummins for almost 70,000 miles in 7.5 yrs. No problem with the Particulate Filter as it would run a regen cycle about every 8K-10K miles. At 40,000 lbs., we averaged about 7.5 mpg's.
I think if I were looking at coaches in that time frame, I would look at the history of that particular coach/engine and then make my decision. I wouldn't just rule them out automatically.
MM.
The Cummins DPF was quite a bit more reliable than the Navistar engines with DPF. But some still had issues. I would trust a high-milaege Cummins with known history. If anything, high mile coaches are driven longer and harder typically, which is actually better for your DPF. When our DPF trucks started having issues (especially with the turbos) we changed company policy to "drive it like you stole it" and overall operating costs went down. Driving too gently causes frequent regens, which uses more fuel than driving it hard!
