dfbutler,

I have the same beef with my 04 Excursion, really wild on the CC, can't ever stay steady. My 02 Excursion with the 7.3 hardly ever missed a beat, stayed right on target. (most of the time anyway)

What gives??

npccpartsman,
do you think your 04 could have a chat with my 04 and clue it in??

 

well, just got back from my almost monthly trip to florida, i have been doing sort of some mpg experiments, mind you, this is ME!!! i am not a scientist or anything, but here is what i ahve observed with my truck.

i take I-75 from tennessee to the florida turnpike then to palm beach, after a few runs here is what i got,with cruise control, lower mpg then without, citgo, texaco seem to be best fuel. i run full tire pressure, cruise between 70-75 with a few bursts to 78-80 and the always slow downs through the cities. this last trip, on the way down filled up once and hand calculated 18.3 mpg, on the way back, filled up when got home and calculated 17.9. so now when i get some money, i am going to do the exhaust upgrade and put a tuner on it(maybe) and some slightly larger a little more agressive tire, then will see what that does to the mpg!!!!

 

bf250,

That is pretty awesome mileage if you are stock. I want your ride!!

 

05 PSD CC LB 4x4 11,000 miles. I get max 16 mpg not towing , towing 10mpg Just won't go over those marks. Sometimes its less depending on conditions! I pretty happy with it, I guess a guy could always use more mpg.

 

I think fuel mileage inherently varies greatly from vehicle to vehicle. But it also relies on how you drive, what speed you drive, what the road conditions are, the fuel quality you are running, and especially the wind. Even a slight head wind of a few knots will lower your MPG, or a little tail wind can greatly increase it.

I have mentioned it a few times here on this sight, and I hate to keep brining it up, but if you want to maximize your fuel efficiency, get yourself a scangauge (scangauge.com). It costs $129 and plugs into your OBDII port. It gives you instantaneous MPG, RPM, water temp, MAP, inlet air temp, and a bunch of other goodies. It also serves as a trip meter. You can calibrate it to your individual truck by adjusting the amount of fuel it thinks you used to what you actually used between fill-ups. Mine is usually accurate to a tenth of a gallon over 25 to 26 gallons used.

I have a 2004 F250 4X4 SC SB with 3.73 gears and today I got 19.2 MPG on the way to work. That is with warming up the engine to 80 °F water temp (about 5 minutes), 2 miles city, 10 miles country, 23 miles highway, and 2 miles city. The country road was traveled at 59.5 MPH and the highway was traveled at 68.0 MPH. Wile at 68 MPH my instantaneous MPG would range between 20.2 and 23.6 MPG. Of course extremes are encountered when going up and down hills. This morning it was 37 °F with very little wind.

With the scangauge, I was able to determine that 68 MPH (1960 RPM) on the highway was ideal for my truck. If you want to maximize your MPG, you need to use something that is more frequent than calculating every tank. And when using anything, you have to be diligent at filling the tank to the same level each time or else your results are junk. The best is to fill the tank to the same level using the same station and the same diesel pump each time you add fuel to your tank. Then you can negate the effect of the pump calibration.

When fighting a head wind, I have seen 14 MPG on the same trip and with a tail wind I have seen as high as 22.5 MPG. This is all on the “to work” trip. My fuel mileage is always less on the way home since I drive slightly down hill to get to work (about a 150-foot vertical difference).

So that is my $0.02 worth.

 

Checked out their website. Sounds like a kick-@ss device...

Too bad its uglier than sin. Or I'd get one.

 

Yeah, she is ugly, but I mounted her down low so you cant really tell (that just doesn't sound right ). There is no way I would mount it on top of my dash.

 

The scanguage has been redesigned. Looks great and is MUCH smaller.

 

I think 16 MPG is pretty good for city. I can get 20 on pure highway driving. My average is around 16. I use synthetic oil, leave the hubs locked in automatic, slow excellerations, and try to coast to long stops.