Comprehensive MPG thread.

[The Evil Twin]

New 38’s and getting 24MPG

I assume you didn't get the speedo corrected?

Best I ever got with the old 6.7 was 21.x over 600ish miles down I-95 from VA to GA. I left at 0300 and the average speed was 72 mph. That was bone stock with the factory granite Michelin tires. Adding a level and 295 tires stole 3 mpg from me.
Towing 13k for that same stretch was in the 12s.
Curious how the new truck will fare. If it ever shows up at the dealer

 

[thatdood]

I assume you didn't get the speedo corrected?

Best I ever got with the old 6.7 was 21.x over 600ish miles down I-95 from VA to GA. I left at 0300 and the average speed was 72 mph. That was bone stock with the factory granite Michelin tires. Adding a level and 295 tires stole 3 mpg from me.
Towing 13k for that same stretch was in the 12s.
Curious how the new truck will fare. If it ever shows up at the dealer

Haha… oops I meant 14MPG

 

[MackDaddy33]

My HO towing is getting about 14mpg… of DEF

 

[DJRobbie]

My HO towing a 12,000 pound fiver over mountains averages between 12 - 14 MPG. When towing over mountains I drink def like Frank the Tank drinks beer.

 

[MackDaddy33]

My HO towing a 12,000 pound fiver over mountains averages between 12 - 14 MPG. When towing over mountains I drink def like Frank the Tank drinks beer.

Same! I had a 22 and it seems like unloaded, it’s about the same usage, but towing it’s at least twice as much.

 

[Unmanageable]

55 stay

55 stay alive!
View attachment 225714
View attachment 225715

what’s that second picture from?

 

[Toxophilite]

Haha… oops I meant 14MPG

I am running 38’s and I am getting 12 city and 14-15 highway. Going from stock suspension to 5.5” lift and 38’s has averaged a 3 mpg drop overall. However, highway speed is almost always 70-80mph, I’m sure it would be significantly better at 55-65. Mph.

 

[FuelTankReInforcedSkidPlt]

@unmanageable 2nd screen is the Edge Insight CTS3

 

[Retired Dozer Fixer]

My HO towing a 12,000 pound fiver over mountains averages between 12 - 14 MPG. When towing over mountains I drink def like Frank the Tank drinks beer.

Anything that has DEF after treatment will use substantially more under load. Ever run newer farm tractors? Definitely will see a difference

 

[InfernoZR1]

Engine: 6.7 Diesel

F250 or F350: F350

What Blend: None - Texas "winter" Fuel

Mileage: 53,500

Stock Oil: Factory

Hand Calculated MPG or Truck Computer MPG: Both

MPG City Unloaded: 20.4

MPG/MPH Highway Unloaded: 24.0

MPG Towing: (Before Delete) 13.0

MPG Hauling: (Before Delete) 13.0 (These are the same for me)

Octane: Low Sulfur Diesel

Tire PSI Unloaded: 55psi

Tire Psi Loaded: 65psi

Stock truck: No

Programmer: No

Engine/Exhaust/Intake Mods: Deleted, Custom "+75HP tune" Upper and Lower Billet Intake. Stainless Cold Side Piping, 23+ CCV system,

Diesel Deleted: Yes

Stock Tires: No - 37" x 12.50 Toyo Open Country AT

Stock Wheels: No - 18" Raceline Wheels

Lifted: 2.5" ReadyLift SST Level Kit

Reverse Leveled: No

Elevation from Sea Level: 0'

Average air temp: 85°

Tonneau Cover: Yes (Retractable Elite Cover)

 

[bigfoot21075]

Not bad
Your hwy mpg is low due to speed. The 4:30 rear is screaming at 80.

I would not call 2,000 rpm exactly screaming.

 

[Tugboat]

On last road trip to KTP and back from ID on 37x12.5 K03's with PPE Zilla intake manifold and trubo inlet kit and PPE inner cooler installed
Discovered 72-84mph is sweet spot for milage
Average MPG for the trip ~17.3

At highway speeds, the big difference I've noticed since running PPE intake and inner cooler is the inner cooler and supplemental cooling system together on highway maintains 13-17° difference between IAT and CAT, even on plus 95° days. The OEM inner cooler ran 20-30° difference between IAT and CAT. These are numbers observed on iDash - and no I don't have pictures sorry.

Picture of PPE (left) and OEM (right) side by side - it seems the increased cooling capacity along with improved heat exchange makes a real difference keeping charge air temps lower than OEM inner cooler

 

[JTredway]

At highway speeds, the big difference I've noticed since running PPE intake and inner cooler is the inner cooler and supplemental cooling system together on highway maintains 13-17° difference between IAT and CAT, even on plus 95° days. The OEM inner cooler ran 20-30° difference between IAT and CAT. These are numbers observed on iDash - and no I don't have pictures sorry.

View attachment 265939

this is on par with what I see with my mishimoto intercooler and Pusher setup. Obviously the delta climbs once you start to really get into the skinny pedal but overall i value the intercooler upgrade too just like you

 

[JTredway]

@Tugboat about to drive 90 miles south here in Atlanta. I'll report back since it's a nice hot and humid ass day here.

 

[JTredway]

@Tugboat

This one had been 80-90 the whole time for a while at this point.

CAC top left
IAT bottom left

This was something more reasonable around a sustained 70-75

 

[Tugboat]

Nice seems we're seeing pretty much same this is after 4 hours @80+ stopped in parking lot in Omaha NE coming back from KTP

The other thing I've noticed is Exhaust Filter % (DPF) stay at 0% on the road - around town only gets up to 20-30% then drops to 0% - this behavior started after installing PPE intake and inner cooler wonder if engine is now burning cleaner or is it most my driving is at highway speeds

 

[The Evil Twin]

Nice seems we're seeing pretty much same this is after 4 hours @80+ stopped in parking lot in Omaha NE coming back from KTP
View attachment 266140
The other thing I've noticed is Exhaust Filter % (DPF) stay at 0% on the road - around town only gets up to 20-30% then drops to 0% - this behavior started after installing PPE intake and inner cooler wonder if engine is now burning cleaner or is it most my driving is at highway speeds

Probably just the highway speeds. Mine has been at 0 for over a tank of fuel. Maybe a 1-1/2 tanks or so. At first I thought it was because I was lugging around 14k. But for the last 1/4 tank of unloaded highway (a little byway mixed in) it remains at 0%. I put about a 1/4 to 1/2 tank through it prior to towing after it went to 0. I thought about snapping a photo with the miles before I hooked up just to see how long it stayed. Didn’t do it, but wish I had!
I’m not doing anything different. Same 2 fuel stations, same Optilube every fill.

 

[Optimus🤖]

@Tugboat

This one had been 80-90 the whole time for a while at this point.

CAC top left
IAT bottom left

View attachment 266008

This was something more reasonable around a sustained 70-75
View attachment 266009

If I buy you a crack crawler sticker, will you put it on!?

 

[Tugboat]

If I buy you a crack crawler sticker, will you put it on!?

View attachment 266215

sure why not it'll match the 2 stone chips that're already there

 

[Tex_Hunter]

Nice seems we're seeing pretty much same this is after 4 hours @80+ stopped in parking lot in Omaha NE coming back from KTP
View attachment 266140
The other thing I've noticed is Exhaust Filter % (DPF) stay at 0% on the road - around town only gets up to 20-30% then drops to 0% - this behavior started after installing PPE intake and inner cooler wonder if engine is now burning cleaner or is it most my driving is at highway speeds

Slightly O/T, but curious, do you actually notice the truck doing fewer regens (ie. through the PID's on your iDash)? Or does the filter just stay at 0%/lower %'s in between regens? I have noticed now several times on long stretches of highway driving that my filter % stays at 0% but the truck still goes through an active regen every 500miles like clockwork.

The PPE intake and intercooler on both on my short list of mods to tackle this year.