Sierra1

As the title reads, I'm curious to know who has the most miles on their 2015's already? Specifically, I'm curious to know what, if any, problems have you had with it, and what kind of "general" MPG are you seeing on a regular basis? I've read that the 14's and 15's are killing the earlier year trucks with good-great MPG. My new 2015 3500 SRW CC long bed with the Aisin tranny, with just 1500 miles is already getting 19.2 MPG on the highway running 70-75 MPH, and about 16.8 MPG around town. My 2003 would routinely get 22-125 MPG on summer blend diesel with just a basic Edge dip switch tuner and a BHAF. It was a 6 speed HO with 3.7x gears, crew cab, long bed, 4x4. The motor itself was great, but everything else around it was JUNK! I went through 2 sets of upper and lower ball joints before 36k miles because "your running too much air (79 psi) in your 10 ply tires which is too rough on the front end." Several trips to the dealer with extended stays for lack of power concerns, several trips to the dealer for leaking injector O rings, the injection pump took a ****, the shocks were gone at ~20k miles, and the list went on and on. I dumped it so quick and bought a 2007 Silverado with the Duramax/Allison combo and it was a GREAT truck for the 10 years I had it...no issues. Other than diesel being super high when I sold it, and buying 6 tires at a time, it was a great truck. No matter what I did it never got any better than 16.2 MPG, and that was running 60-65 MPH. I kinda got off subject with this post, I apologize. I'm just wanting to know what I might have to look forward to in the future should I chose to keep this rig around for a while. TIA


PS....the more I read, the more I'm seeing a semi-constant theme that the guys getting the really good MPG have left their trucks all stock....exhaust and all. Any truth to that? I'd LOVE to straight pipe my truck right now, but don't want to get my warranty canceled because I want sound from my truck. With all the emissions BS on the exhaust side, is it possible to straight pipe the thing with a tuner for <$1000?

bob_boater

I have 2775 miles on my 2015 Ram 2500 ST Crew 4X4 68RFE 6.7 TD, 18-inch tires, 3.42Rear Diff. All stock.

Since purchase, the MPG (per the message center, not calculated) shows 18.2 for all miles.

This mileage includes a trip from WA to CA towing a 7X14 utility trailer loaded with tools, generator, windsurfing gear, two dogs, beer, etc.

When towing, the message center shows 12 MPG +/- depending upon conditions.

Overall, I don't think it is bad. Better than replacing transmissions in the Suburban. ;-)

FMB

I only have almost 2,000 miles on my new truck and only 500 of that was pulling the Fox in mixed mountain and valley driving. So far, mileage was 19 highway/town mixed empty and 11.5 towing.

I found it fascinating when I recorded the Lie-O-Meter and compared it to my calculator for two tank fills. One tank, the Lie-O-Meter read high 0.04 MPG and the other high by 0.06 MPG. I don't recall my '03 ever being that close. They both could be just "rounding up" to the higher tenth, and not following the "rounding down" rules.

The Urea tank is down to the 3/4 mark.

So far, I'm happy, and back to coffee.

RAMRODD

I have just over 14k on my 14 just over 10k towing. I've had no problems of any kind. But my truck is juiced up a bit

Sierra1

I read numerous times people saying that the truck's MPG calculator was way high....mine is right on the mark with the hand calculator. I'm seeing 19.3 MPG on the highway, and 16ish mixed highway/city with 2k miles on the clock. I'm planning to hook up ~18k pounds and run it like I stole it for a few hundred miles to expedite the break-in process. So far I cannot be more happy with the fuel economy considering the amount of miles I have on the motor, and how big the truck is. Maybe I have a happy motor??? Only time will tell, but for now....I'm not touching anything other than a washable air filter.

bob_boater

Just got back from a 828 mile trip to Oregon towing the 7X14, loaded trailer. Total miles now 3603 on my 2015 2500 Tradesman.

Truck's MPG calculator now at 14.0. Only about 300 or 400 of the 3603 miles not towing.

Oil change at 2700. I've put 3 containers of DEF in it. The DEF gauge was at 1/2 when I got it and it is now at 3/4.

I hope that DEF usage is within normal limits and that it goes down as mileage increases?

gsbrockman

It will be verrrry difficult to accurately track DEF consumption tossing it in 2.5 gallons at a time. The most accurate way is to buy it in bulk at a truck stop and gauge it that way.

RAMRODD

My mpg calculator consistently reads 1.1 mpg lower then what I'm actually getting

bob_boater

Good point, thanks. At some point, I'll hand-calculate my MPG and DEF usage. However, of the three West-coast states, I think I have only seen bulk DEF in California; I don't remember seeing it at the pump in Washington or in Oregon. You can't even pump your own gas or diesel in Oregon.

RAMRODD's MPG experience with the lie-o-meter is encouraging. I hope mine is low too.

bob_boater

Another 800+ mile windsurfing trip to the Gorge (towing) and Lie-O-Meter at 4435 miles and 13.9 MPG.

Time for Beer!

spider_1954

I know that you are asking about the 2015 but I have a 2013 with 70000 miles. I have had to have the gauge cluster changed once and the exhaust filter changed twice.
I get any where from 18 mpg to 23 mph (not towing) just depending on how I drive and conditions. I tow a 38' 5th wheel and get on average 10 pulling at around 75 mph.

DIESELWRKS

yes you can pump your own diesel and diesel only in Oregon. You are allowed if you are the owner/operator of the vehicle. this Law was passed a few years past. I do it all the time. it is fun to see the young zit faced kid yell and run at me and attempt to explain to me that its illegal. I usually just smile and keep pumping.

mkivbren

45k on mine. Just got the "see dealer - exhaust system service" message. Mostly run unloaded and 80% hwy miles.. 18-23mpg on the dash meter

DodgeCowboy

Yep here in The Dalles Or you can pump your own diesel I do it all the time it's easier and safer, literally had 500 miles on my 14 before I had the kid put gas in it after I told him to fill diesel.

Sierra1

I now have 14k miles and typically see 23ish MPG on the highway. On winter fuel I'm seeing around 19ish MPG highway, and about 15ish city. My buddy has an 03 HO dually 4x4 with the 6 speed manual. It has the BHAF and an ol' school Edge EZ turned up as high as she will go. We hand calculated 26.4 MPG with that truck running 65 MPH with a Gator 6x6 in the bed....unreal number for a dually, but witnessed/verified personally by me.