Mileage observations
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
I'd keep track of it, your fuel economy seems a bit lower than usual as well.
Thread Starter
|
Cargo Master
Joined: Jul 2008
Posts: 2,575
Likes: 56
7084.7 the last one ended and the one just now started at 7174.2. You know what - I think I confused myself because the regen just before this one didn't have a chance to finish. I've had 2 since I came back from Indianapolis.
Going back one more I'm at 6966. So from there to 7084 is... 118? That still doesn't seem right. Now I'm curious.
Going back one more I'm at 6966. So from there to 7084 is... 118? That still doesn't seem right. Now I'm curious.
Laughing Gas
Joined: Feb 2009
Posts: 914
Likes: 1
From: New Braunfels, Texas
I'm stuck at 16, but I do a LOT of short trips in town, usually running errands at lunch. I want to blame it on the 20" wheels instead.
Steve, we're pretty close to the same place mileage-wise, and I'm beginning to think about that first service trip. Have you had your first oil change yet? If so what else did you do? Rotate tires?
Steve, we're pretty close to the same place mileage-wise, and I'm beginning to think about that first service trip. Have you had your first oil change yet? If so what else did you do? Rotate tires?
Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
Is there not a break-in seasoning strategy for the DPF programmed into the PCM.?
I vaguely remember talk of this with the 6.4 too.
I ran about 1200 miles a couple of weeks ago unloaded, cruising at 72mph (75 on the speedo) and averaged 17.8 driving from Greenville, SC to Memphis which can be fairly hilly from Atlanta through Birmingham up through tupelo.
Anyway, my regens were crazy, seemed like every 100-200 miles! But, it was the first time I drove a while without towing. When I tow going the same route, regen will be up to 700 miles apart! This is the beauty of passive regen. My towing mpg is mostly around 12, mostly because of the passive regen I'm sure!
So, once again, the regen deal is wildly variable. Very same conversations for us job 1 and 2 6.4 owners a few years ago.
Yes, there could be an issue with frequent regens, poor fuel, etc... But just like in '08, we are still learning and trying to figure out a very complicated system.
I vaguely remember talk of this with the 6.4 too.
I ran about 1200 miles a couple of weeks ago unloaded, cruising at 72mph (75 on the speedo) and averaged 17.8 driving from Greenville, SC to Memphis which can be fairly hilly from Atlanta through Birmingham up through tupelo.
Anyway, my regens were crazy, seemed like every 100-200 miles! But, it was the first time I drove a while without towing. When I tow going the same route, regen will be up to 700 miles apart! This is the beauty of passive regen. My towing mpg is mostly around 12, mostly because of the passive regen I'm sure!
So, once again, the regen deal is wildly variable. Very same conversations for us job 1 and 2 6.4 owners a few years ago.
Yes, there could be an issue with frequent regens, poor fuel, etc... But just like in '08, we are still learning and trying to figure out a very complicated system.
Thread Starter
|
Cargo Master
Joined: Jul 2008
Posts: 2,575
Likes: 56
To get up to regen temps takes quite a bit of work for the engine. If you are pulling in hills I can see the regens being further between as going up hill requires quite a bit of power to maintain speed. This is likely where the temps are on par with those necessary for DPF regeneration to take place, at least in part.
Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
Passive regeneration is just that - passive. It doesn't require any outside help. Therefore, if you are truly passively regenerating there would be no extra fuel consumption to burn the soot out of your exhaust pipe. An Active regeneration process is where extra fuel is used for the purpose of boosting EGT's, not hp to move the vehicle. Therefore the passove regeneration process is a function of the engine creating hp (or inefficiency in creating hp), not fuel dumped to boost EGT's. My guess is your fuel mileage is more straight fuel mileage rather than losses in active regens (as you state they happen less frequently pulling).
.
.
Thread Starter
|
Cargo Master
Joined: Jul 2008
Posts: 2,575
Likes: 56
Im confused. Maybe I misunderstood your comment in that I took it to mean you were getting poor fuel mileage from passive regeneration?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
Originally Posted by ruschejj
When I tow going the same route, regen will be up to 700 miles apart! This is the beauty of passive regen.
Elder User
Joined: Mar 2007
Posts: 879
Likes: 0
From: at the truck pulls
Is there not a break-in seasoning strategy for the DPF programmed into the PCM.?
I ran about 1200 miles a couple of weeks ago unloaded, cruising at 72mph (75 on the speedo) and averaged 17.8 driving from Greenville, SC to Memphis which can be fairly hilly from Atlanta through Birmingham up through tupelo.
I ran about 1200 miles a couple of weeks ago unloaded, cruising at 72mph (75 on the speedo) and averaged 17.8 driving from Greenville, SC to Memphis which can be fairly hilly from Atlanta through Birmingham up through tupelo.
I ran that long hilly road to Tupelo at 70 mph and got 17.5, then ran it at 75 mph and got around 16.6.
Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
Thanks Tom and Steve. I intended no "warning shot off the bow". Tom clarified, passive regen is a big plus in towing economy, which I learned over time, had no idea the engine would be so good at it when I bought it.
Hey Fordtuf, yeah, I looked it up. I drove to mem on 8/1, came home on 8/3. I def do take 65N to the exit w/the flying j I think, turn left, turn right into the industrial park, go to the new road.
And really, I get onto 85S almost weekly either at commerce or from 316. Sometimes I go over to Anderson, SC to get on 85 as well. I only live about 120 miles from you, maybe less. I like to fill up at the pilot in braselton on my way so I can get a good run towards my destination.
Hey Fordtuf, yeah, I looked it up. I drove to mem on 8/1, came home on 8/3. I def do take 65N to the exit w/the flying j I think, turn left, turn right into the industrial park, go to the new road.
And really, I get onto 85S almost weekly either at commerce or from 316. Sometimes I go over to Anderson, SC to get on 85 as well. I only live about 120 miles from you, maybe less. I like to fill up at the pilot in braselton on my way so I can get a good run towards my destination.
New User
Joined: May 2011
Posts: 22
Likes: 0
I've noticed one important thing in regards to fuel economy and active regens. It definitely matters where you get your gas from. I pretty much have only two choices in my day to day travels, Citgo and Shell.
Citgo = frequent regens and about a 1 mpg loss
Shell = Less frequent regens and overall average of about 18
Most of my driving is 45 minutes each way to work in southern nj with long (but not tall) grades over country roads with very few stops (4). Another thing which I "think" I see, but am not sure I can explain is that mpg seems better when tank is full (weird!)
Citgo = frequent regens and about a 1 mpg loss
Shell = Less frequent regens and overall average of about 18
Most of my driving is 45 minutes each way to work in southern nj with long (but not tall) grades over country roads with very few stops (4). Another thing which I "think" I see, but am not sure I can explain is that mpg seems better when tank is full (weird!)
Junior User
Joined: Nov 2010
Posts: 78
Likes: 0
From: Illinois
All I know for sure is my mileage is a little worse (1-2 mpg) since I had the latest flash. That is a little frustrating, but the transmission shifts are a lot smoother.
So, it's a push on the happiness meter.
So, it's a push on the happiness meter.
VT Chapter Ldr
Joined: Apr 2004
Posts: 96,116
Likes: 294
From: Orange, Vermont
Are you guys just going off what the computer display shows as mileage or do you do hand calculations also? Looks like the display is showing the average mileage and not the instant, correct? How accurate is the ave. mileage number to hand calculated one?
