Excursion expected MPG. - Ford Powerstroke Diesel Forum

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post #1 of 33 Old 03-08-2012, 03:57 AM Thread Starter
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Excursion expected MPG.

I'm interested in getting the family an 8 passenger vehicle and really like the idea of the Excursion. I've researched over the past few weeks and understand the shortfalls of the 6.0 and realize I will need to do a little work to get it 99% reliable. I'm okay with that and completely understand it.

With that said, what can I reasonably expect out an un-modified 05 for mpgs keeping the following in mind?

Daily driving will be a mix of 55 mph highways, a little stop and go and 70 mph interstates. Let’s call it 40%/40%/20%.

I drive like a grandma. I'm not interested in ripping off the line and plowing down the interstate at 90. I have a light foot although I do understand getting after it once or twice a day is good for the engine.

The truck will rarely be packed heavy.

There will be no physical modifications (larger tires, lift, large roof racks, light, etc)

Since I'll be bulletproofing the engine, I will prolly grab the SCT and use the economy tune 90% of the time.

What can I expect for my DD MPGs with and without the tuner? I'm guessing 15-16 without the tuner and maybe 16-17 with? Is that wishful thinking?
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post #2 of 33 Old 03-08-2012, 05:08 AM
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With mine I get 20-21 mpg (imp) if I leave it on cruise control and with just city driving it drops to 14-15 mpg (imp). If I take control of the throttle on the hiway it drops to 18 mpg.

SCT, no studs...yet, Dual OEM intake air filter housings, Banks intercooler & intake elbow, Banks exhaust system, Windrunner ported intake manifold, Bullet Proof Diesel remote oil cooler & thermostat, AirDog2 (plus a couple spares), Power steering filter (Amsoil dual-bypass), MagTec deep ATF pan, Electric oil pre-lub pump, Dakota Digital gauges.
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post #3 of 33 Old 03-08-2012, 05:11 AM Thread Starter
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Originally Posted by Term3 View Post
With mine I get 20-21 mpg (imp) if I leave it on cruise control and with just city driving it drops to 14-15 mpg (imp). If I take control of the throttle on the hiway it drops to 18 mpg.
I'm assuming that's with no tune?
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post #4 of 33 Old 03-08-2012, 06:42 AM
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Yes, no tune but I do have EGR delete.

SCT, no studs...yet, Dual OEM intake air filter housings, Banks intercooler & intake elbow, Banks exhaust system, Windrunner ported intake manifold, Bullet Proof Diesel remote oil cooler & thermostat, AirDog2 (plus a couple spares), Power steering filter (Amsoil dual-bypass), MagTec deep ATF pan, Electric oil pre-lub pump, Dakota Digital gauges.
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post #5 of 33 Old 03-23-2012, 08:01 AM
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A couple notes with my 6.0:

1: my truck gets better mpg above 75 than it does below 70. the turbo does not really spool at those speeds, so it bogs on small inclines etc., where as above 75 the turbo is always spinning pretty quick.
2: my mpg in town is controlled more by the ambient temp/humidity and the ratio fo in town to highway driving I have done. On cold dry days, i get good mpg, on hot humid days, not so much. after several days of in town driving, my mpg will go down a little.
3. I routinely see 19mpg on the highway, and 13-14 in town. It does not matter on either whether I am alone, or have the family, the dogs, and a weeks worth of stuff filling it up. my mpg does nto change untila trailer is hooked up.

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post #6 of 33 Old 04-04-2012, 06:49 AM
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I'm running a 6.0L in an '04 X with EGR delete. I took a 500 mile road trip and got around 14-15 mpg (all highway, no trailer @ ~75mpg & cruise control). Can I assume I'm having some problems? If so, where would I start to get that 20 mpg I've heard so much about? There is no smoke, and the top end has been "fixed" (head studs/head gaskets/etc.).
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post #7 of 33 Old 04-04-2012, 07:14 AM
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I'm running a 6.0L in an '04 X with EGR delete. I took a 500 mile road trip and got around 14-15 mpg (all highway, no trailer @ ~75mpg & cruise control). Can I assume I'm having some problems? If so, where would I start to get that 20 mpg I've heard so much about? There is no smoke, and the top end has been "fixed" (head studs/head gaskets/etc.).
some people report after an EGR delte their MPG goes down. maybe search some threads in the main 6.0 forum about EGR delete and MPG?

How long has it been since you did the head studs etc? I think you may need to put several K miles on the motor after work like that (especially if you got the head faces milled) to sort of break it in again.

With that said - lots of people report that kind of MPG all the time in perfectly ordinary 6.0's. It depends so much on the weather, types of roads etc.

05 F250 King Ranch crew cab - bone stock for now, new to me April 2013, 56K miles
05 Volvo S60R, 300+ hp and AWD
09 Audi A4 Qautro 2.0T, AWD and 30 mpg!
06 Malibu LSV Wakesetter, 383 stroker
13 Coachmen 320BHDS - 10K lake house on wheels
81 Jeep CJ-8 (in progress); 5.7 HEMI; LJ (extended) frame, 3.5 RE lift, flatty fenders
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post #8 of 33 Old 04-04-2012, 07:18 AM
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Jeep,

Thanks for the info. It's been about 7 months and 4000 miles since the work. I'll keep an eye on it.

Ed
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post #9 of 33 Old 06-02-2012, 06:16 PM
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I have on 05 excursion 6.0 and I am getting 22.1 mpg. I have a SCT touch screen extream set on performance mode, 5" magnaflow exhaust, AFE manifold, AFE cold air intake filter, AFE intercooler, ARP head studs, bulet proof oil cooler and water pump, Sinister coolant filter, sinister EGR delete and updated turbo oil intake and drain tube, stand pipes and dummy plugs. updated Blue spring for higher fuel pressure. I do not know what to do next. I would like to see if i could get better fuel milege too.
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post #10 of 33 Old 06-04-2012, 10:55 AM
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how are you calculating your MPG? Is that a hand calculated number?

05 F250 King Ranch crew cab - bone stock for now, new to me April 2013, 56K miles
05 Volvo S60R, 300+ hp and AWD
09 Audi A4 Qautro 2.0T, AWD and 30 mpg!
06 Malibu LSV Wakesetter, 383 stroker
13 Coachmen 320BHDS - 10K lake house on wheels
81 Jeep CJ-8 (in progress); 5.7 HEMI; LJ (extended) frame, 3.5 RE lift, flatty fenders
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