I'm getting 0 miles/0 gallons. Washed and waxed the truck.Detailed it inside and out. Parked it in the front yard. Sure looks good. Started it today, let it idle until warmed up, shut it off and jumped in my 252,000 mile Accord that still gets 30 +mpg. I don't have to drive the truck, especially when we are getting price gouging that outta be a federal crime for diesel fuel. But I'll bet I have the cleanest PSD on the planet.

 

My 6.0 is getting 10 mpg with 33" tires and 65hp Predator program. Should I be concerned? or is this normal?

 

Not with those tires and no gear....if you have 3:73's that is great MPG

 

I just got back from FLA and I got about 12 mpg towing my 3500 lb trailer @ 70+ truck ran great use predator set to 65 hp

 

I just have to ask what you bought for almost 60K. What truck,equip,etc?? I'm serious.

Can't help you with milage problem other than to say my '04 F350,CC avg's about 15mpg around town or lower speeds. Can get 18 on highway if I keep it down to 60 mph which is difficult.

With my '00 Lance 1030 I can count on 12-13 mpg loaded. I'm sort of suprised
I can't get higher mpg without camper. These are all hand calculations.The
trip computer reads about 1 mpg higher.

 

We have to keep in mind that he's refering to $60,000 as in Canadian dollars. That's roughly $49,800 U.S. Our dollar is still worth more up there. Not on every commodity, but worth more for most goods and services. Automobiles, fuel and homes are the exception in most of the areas north of the 49th parallel.

I guess taking it back to the dealership for service wounldn't be out of the question. That's low fuel economy to me. Broken in properly, your engine should get more than 25% better mileage than you are. Even if you're driving a bit hard.

There's too many of us that are getting better than 15mpg, (or 18mpg for that matter), to expect only 9-10 from these rigs. Driving style can play a big part in it. I have a friend that got 10-11 with his gasser. The same with his new 6.0. Then his wife drove the new truck for a week. She got better than 17mpg on a fresh engine/truck. He's now been informed of his lead foot.

 

We just got grandma's car for free from the parents. It's a Ford Contour that gets 34mpg. It's a 1995 with 20,000 miles on it. My wife's grandfather worked for Ford in Detroit for like 50 years. It's a good car...but no power door locks, which makes it a pain to haul the kids in. So we have to choose...comfort in our beautiful, stylish, lux, powerful PSD at 16.5 mpg with Diesel at $2.69 or we squeeze into our Contour with power nothing and get 34mpg at $2.35 per gallon.
This summer...my PSD will sit in the driveway while I ride my KTM 525EXC to work.

 

I just hauled my 30' 10,000 # toybox camper trailer to San Diego with my 2005 F350 SRW 4x4. 3.73 gears, everything stock on truck, mileage computed by hand. I drove pretty much 65 mph all the way down there, 135 miles, 2500 feet decrease in elevation. Truck has about 2500 miles on it. I got 11mpg. On the way back, I was in a hurry, kept it pretty much at 70, even up some fairly decent grades, I got 8mpg. I commute to work with it, about 15 miles of freeway one way, and I get about 14. This usually includes some around town driving. I reset the trip odometer every time I fill up and have a calculator in my glove box to figure my mileage.


Ya know guys you can't expect to get fantastic mileage and still draw upon the 300 plus horses of this engine. You can get really good mileage if your on the highway and you keep your rpm's below 2000. I have seen the lye-o-meter with readings above 20mpg going down the highway unloaded. But start pressing the tall skinny pedal and your gonna pay. I just don't have enough self control not to press it, but its nice to know that if I really need to squeeze the miles out I have that option.

With all that said, if a guy is really only getting 8 mpg all the time, towing or empty, he needs to check under the hood and make sure hes got the right engine. I used to have a Ford 250 with a big block 460 that acted like that....

 

He just needs to take it to the shop and have it evaluated by someone who knows what they are doing and actually listens to the customer who describes the symptoms. It always helps to put the symptoms in writing (typed) and hand that to the dealer when you arrive. I get a lot more replaced that way.

 

Given the title of this thread... maybe THAT'S the problem ...
he's putting gas in his deizle

but really...
I could get 8 mpg with my excursion if I wanted to and venture to say you all could drop yours to that if you were flooring it EVERY light... running full bore up to every stop sign, then gunning it WOT to leave....
really easy - after all - mine is a 8k+ lb shoebox....

 

Bought my '04 last June and had the same problem. Took it to the dealer, several parts were changed including the egr, they also did a December flash. Now the truck gets around 16 or 17, so I'd also suggest getting it looked into. It felt kinda bad when my big ride that weighs 4000# more got better mileage than my pickup.

 

I respect Tim's opinion, but aren't 33 in. tires just one size up from stock? I believe that is a 285 size tire. And running 3.73's in economy setting with the tuner.....I don't think I would be very happy with that. I'm switching to 285's from the stock 265's very soon, and I hope to break even with a tuner in economy mode. Stay tuned.....

 

Your gas mileage sucks?? It should! The 6.0 runs much better if you put diesel in the truck!
Sorry. I couldn't resist.

 

IMO the 3:73's are just not enough for any tire size other than stock, now if they would rise the legal speed limit by ten mph....then 3:73 would be great....this is just what I have learned over time. The 6.0 seems to get 1.4 to 2.6 better MPG with stock tires, at 75 MPH, with 4:10....I know that is not where the motor seems to be at peak efficiency, however it is where it seems to get better MPG. When you increase this truck to the correct RPM, (for MPG 2400/2550RPM) resulting in more MPH with the 73’s… then you have to much drag .....with 4:10's at 75 it (again I say SEEMS) to get better MPG.

Now take 33's and leave the 73's in it and your are moving away form the sweeeeet spot of the motor...again IMO, and my own test...

 

Unless you have the Edge installed and then you just push a button and instantly have more than enough power and the normal 16.5 to 17.5 winter fuel mileage.