I’d go for the Pete for the same reason I’d avoid the Freightliner, Resale. Maybe the KW, whichever I like better
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I'm not saying you're wrong, but I would like to see some evidence to support it.
More horses means less time spent full throttle climbing hills.
The DD15 I drove got better mileage then the DD13 I had. 505 vs 450. It also made trips faster.
Less engine run time = less fuel used. Less throttle time climbing hills = less fuel burned.
The longer wheelbase will come in handy for front overhang on the flatbed. Depending on the loads. It could possibly save on oversized permits by not having as much rear overhang.
It also gives you flexibility should you decide to install a drop axle for overweight in the future. Or a pump for tankers. (That's just guessing since no pics posted)
The only drawback is more open space. If you decide to pull vans. You won't have the aerodynamics for fuel.
The megas have shortened theres down so much the drives are practically flush with the sleeper now.
Get extended warranty though. I can't believe there's none left. FL defenitly has the advantage for that.
I talked to FL today. And they've got a few 2018 model trucks with around 100k miles coming in next week. I'll be doing some looking as well. Won't be looking at the auto's though.
You might have the ecm cranked open also. You might not want former company specs and governors. I did that on a truck I was buying through the company. Made a world of difference in power and economy.Last edited: Sep 1, 2019
The X15 is today the best-selling engine for Class 8 trucks, the large trucks commonly seen on interstate highways in the U.S. Cummins supplied more diesel engines for that class than any other engine maker in 2017. Thanks largely to the X15, the company saw its market share increase from 35 percent in 2016 to 38 percent in 2017, according to WardsAuto.com.
Available in performance and efficiency configurations, the engine’s popularity stems from three key attributes: reliability, lower maintenance costs and fuel economy. Reliability was enhanced by a design that simplified some systems, backed by more than 10 million miles of testing. Total cost of ownership has been reduced by as much as 40 percent compared to a 2010 ISX15 engine. And the fuel economy numbers are particularly striking.
Compared to corresponding 2016 models, the X15 Efficiency Series has seen a 2 to 3 percent gain in fuel economy for the 400 to 450 horsepower (hp) range and up to a 12 percent increase for 485 to 500 hp ratings. Measured against comparable 2012 engines, it gets as much as a 20 percent bump in fuel economy.
That saves operators money and also translates into greenhouse gas (GHG) savings at a time many heavy duty fleets are trying to do their part to achieve climate-related goals. The X15 Efficiency Series reduces GHGs beyond the U.S. environmental standards established in 2017.
The Cummins X15 Engine is Winning Friends and Influencing an Industry | Cummins Inc.Bean Jr. Thanks this.
You better calculate how many rpm you will run at which each truck you look at.
Decide what mph you want to run at.
Then look at the specs for each engine and what it's sweetspot is.
EPA 10 and younger engines do not like the high rpm's.
Then decide if the truck is right for you.
ps don't just look at the miles.
Look at the hours off the engine,it will tell you much more about that engine then the driven miles.
Nothing liked high rpms when computers got smart enough for companies to neuter them.
Its a blessed day when I get my foot on the floor and she howls at 2100 or better ready to get up and go.
Not a sick anemic roll over and die by 1750....
Before those days we had engines able to turn 2300.
Fuel mileage 40 years ago was about 5 today it's 8 probably.
So. More horsies please. Easier to stay in top gear all day across the midwest. Or make time upgrade out west.
The X15 is just a rework of the ISX platform, this should alarm anyone.
The DD15 engine is a proven platform and will serve you well in efficiency and reliability. I have a DD15,(17' model), with the DD12 and have very few issues with 680,000 miles. The few issues I've had were warranty work. The turnaround on getting these items fixed was quick. Much quicker than Cummins shops as I've been told.
We pull reefer, typically in the 70k to 80k range. Our engine came with 455hp setting and we recently had FL turn up to 505hp which is max we were told. The difference in power is indeed noticeable and drop in mpg negligible. 7.7 mpg lifetime on truck and still averaging that.
We run all over the 48 and do our fair share of climbing. We typically don't get to top of hill first, but as neither myself nor my wife don't suffer " little man" syndrome, we don't care.
We're running on 22.5 tires and 2.85 rears.
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