Call Mr Hagg (Jerry), Haggai Automotive and Diesel, (678) 688-8107 Also, post this question over at Rawze.com Mr Hagg does quite a bit of work on these Detroits, he knows them well. I would pm Mr Hagg and Unilever over at Rawze's site and try to call Jerry on Monday. Rawze is a regular visitor at the shop, I know both men personally, and for any major work, Mr Hagg is a no brainer. I would not let anyone else in this country touch my motor for a major repair.
I traded my 09 Cascadia for a 14 and am very happy. I normally drive between 60 and 65 and my fuel usage is the following: 09 Cascadia, July 2017, 6.55 14 Cascadia, June 2018, 8.18 at just over 10,000 miles a month and fuel at $3, it comes to a savings of $975......$50 shy of my truck payment.
I cant offer anything regarding mechanics but, I have a (company truck) 2015 Cascadia with a DD15 that I got June of '14. Its leased through Ryder. I am a short regional driver which runs 4 states with a range of about 300 miles radius. I do some local stuff & occasionally stay out over night & Idle. Since my runs are relatively short, I idle a lot more than most people. I do not have an APU, Generator etc. This truck has 254,000 miles on it (again, just over 4 years). For me, this has been a good truck. Maybe I got lucky but its been a good truck. Its had regular maintenance as per Ryder standards, oil changes etc every 30,000 miles. I think I've had a starter put on it & a set of batteries. Other than small petty stuff like cigar lighter fuses etc, I dont think I have any serious issues other than the typical "freightshaker" front end issues, out of line, shaking etc. Otherwise, I have been pretty happy with this truck. I have been so satisfied with this truck that I told my manager a couple of months ago, instead of getting me a new truck in '19, just lease this one for another 3 years. She wont do that though. Its gonna be a new truck.... hopefully without issues & too many stupid changes.
At 250,000 to 300,000 it is a young truck . The one he is looking at like 600,000 miles or more. Those 30,000 mile intervals on oil changes issues don't start making issues till about at that time.(600,000 miles). Now it may not have a problem?. But if you are running a one truck operation, and not a rich person, you do want to do you due diligence to save $$ and head aches on you purchase.
I had a 2013, it was great. Currently have a 2016 DD16. The Detroit DD’s that are in our fleet consistently get the best fuel mileage, the others are Cummins and Volvo’s. Although the newest Volvo D13’s are doing really well, but can’t trust their service network. Having had a few used trucks in the past, the biggest factor I would say as an indicator in how well it was going to perform in the future would be: how well it was maintained. If you trust the salesman and he his steering you towards a truck that was maintained, then that may be a good indication. I bought a cheap used truck once that everyone warned me was not taken care of, it almost sank me. The next used truck I bought from a reputable dealer had been impeccably maintained by a small fleet in the area that was well known. When I bought it they gave me a mountain of maintenance receipts over three inches thick. It was a great truck.
I wasnt really comparing trucks specifically, I was just sharing my experience in my similar situation to allow the OP to use with other posted comments.
The only really sore point with the DD series... the One-Box emissions system. The SCR catalyst is integrated into the structure of the box. When the catalyst wears out. The entire One-Box has to be replaced at a cost somewhere in the vicinity of $14,000 Seems to happen in the area of 700,000 miles depending on the kind of work the trucks been doing.
+1 one box system is pure garbage and plus it is expensive. at 600-750k miles it wears out usually. at the same mileage point injectors start overfueling. so total is about $17-18k ...
Wow. Thats serious $. Maybe could be done for less? Or is that from experience? No wonder some of these guys I see at the rail yards (intermodal) always swapping trucks. In one older one and in a couple years in another older one. Throw them out like wore out socks. Each to their own.