Just finished a trip to CA and back to BC and wish to share my fuel mileages.

I have a 2008 F-350 PSD Lariat SC, 4x4, auto, 3:73 rear and SW with 18" rims. I was towing a 26 foot 26/31 Glendale Titanium 5th wheel weighing 10,600 pounds. I drove the speed limits and trip included mountains and hills on I-5 and costal highway 101.

I towed the trailer for 2468 miles/3972 Kms and the fuel mileage was 9.34 US MPG, 11.21 Imperial MPG or 25.19 Litres/100 Kms. I operated the truck empty for 808 miles/1301 Kms and the fuel mileage was 12.79 US MPG, 15.36 Imperial MPG or 18.39 Litres/100 Kms. The truck now has 5273 Kms/3276 miles with no problems to date.

 

just my opnion, those are some short gears,I cant get 13 with my 6.0 with 373 gears,no matter how I drive it or what speed.

 

Just filled up again at 1,785 miles and I got 8.5 MPG city driving. Overall, I'm averaging 9.4 MPG.

Headed for the Grand Canyon next Saturday.

2008 F350 KR, 4.10 gears, DRW, 4x4, LWB.

 

mattebury.....man what's up, you driving like a wildman or what????? Not rubbing salt but, I'm doing better with my 450 and 4:88's.

Last I figured it, It was at an 11.08 mpg avg

 

10 mile one-way commute on city streets. Anywhere from 20 - 30 minutes, that's why. I get better mileage towing, but then that's pretty much all highway miles.

 

I have 2008 F250 6.4 lariat long bed with 3.73 the truck is now 3 weeks old and has 1650 miles on it after this last trip I am averaging 13.5 MPG in town and on the highway i am getting 17 MPG doing 70 MPH on cruise control and 15 MPG doing 80 MPH again on cruise control and I tested this on a drive from San Diego to Tucson and back again I was not towing anything and I was just by my self in the truck no passenger.
by the way my experience on refueling on the road (traveling on highways) if you are traveling do not waist time stoping at gas station like I did just to find out they did not have the ULSD sign on there pump just go straight to a truck stop they all have the new diesel. And it is also cheaper by 10cents than regular gas stations.
beleive me I waisted time twice to come to this conclusion.
by the way the kids are off school next week and I have a couple of trips organised for them totaling about 1600 miles we are going to Hidden Shores AZ on the first trip and to Bahia De Los Angeles, Baja Cailfornia, Mexico on the segond trip I will post miles after I come back again this is a french guy driving a truck and I love it going up steep hills at 80 MPH all you see is the boost on the Turbos going up to 30 or 35 psi it does not even need to downgrade like my 2002 chevy suburban Z71 which by the way was a way better family vehicule than our 1998 Ford Expedition especially towing our 5500 pounds trailer.
the segond trip is not guaranteed because of refueling issues in Mexico and I do not want to carrie 20 5 gallons tanks because there is no ULSD right now down there.

 

Just towed my 10,000 horse trailer 500 miles. Average speed was 65 to 72. Per computer, got 8.5 mpg with a F350, dually, 4WD, crewcab with a 4:30 gears. Awesome towing machine. Mileage about 1 mpg worse than my 99 7.3 with Banks performance parts, but more pulliing power with new rig.

Have 1,900 total miles on truck and get about 12.4 mpg when doing errands around town.

 

After I see the mileage you guys are getting for the money you spent I like my V-10 better all the time. In 122,000 I've spent 158.00 dollars in repairs other than scheduled maintenance and intown and on the road(75-85mph) I'm avg. 12.7mpg. and towing a double axle trailer with a bobcat and equipment i get over 10mpg at interstate speeds. I think the 6.4 is a great change for Ford but don't know if the cost is worth it.

 

I agree with you but towing a double axle trailer with a bobcat on it is completly diferrent from towing a 10k to 16k pound trailer or fifth wheel especially here in San Diego where any where you are going to go there is steep grades and a gas engine will not make it I have owned an $80k motorhome and without puling a trailer with two jetskis ie 2500 pounds total wieght I was strugling.
the people that are complaining about there gas mileage not being as good as the 6.0 engine do not even own the 6.4 and propably could not afford one lets be real for a moment anyone who spend 60k on a truck a complains about an extra 1 or 2 miles per gallon should not be buying it.
it is the same as the guy that wants to buy a new MB, BMW, AUDI or Cadillac and ask how many miles per gallon that is get? if you have the money to spend on a car or a truck at this cost you should have no problems paying for what it cost to own it.
now this thread is good if people were wandering why the EPA wants the gas emitions lowered and yet approves vehicules that consums more fuel to get that result be built.

 

Another important point lets not compare F250 3.73 6.0 or 6.4 with an F350 or F450 DRW with 4.10 and claims that one is getting better MPG than the other if you compare try comparing the same thing

 

I agree on the mountains getting out of San Diego. It's a 6% grade off the summit going into or out of the Imperial Valley on I-8 (at one point, it's 2,000 feet of elevation change in seven miles, crossing over from San Diego to Imperial Counties). Other major routes out are over mountains too, the Cajon pass going north on I-15 towards Barstow (Vegas) or the Grapevine (North of L.A.) on the I-5 into the San Joaquin Valley. I'm glad I have a diesel to pull over those grades. I can maintain speed on those grades without having to bury my foot into the throttle. Granted, it's not the Rockies, but still, no real place to put her in cruise on the flat.

I realized up front when buying this truck with 4.10 gears and the new emissions rules (not to mention my personal commutting habits) that I would not be seeing the 15 MPG - 17 MPG seen by others with the 6.0.

My overall mileage has only gone down by 2 MPG from my old 2001 F150 SuperCrew (5.4L & towing package). Not too bad considering that in my area of San Diego, regular unleaded is going for $3.14 per gallon and diesel is $2.89, this equates to only $5 more fuel per week for commuting. I think I can afford that.

 

Your correct except for an F450 w/4:10's.....The 450's are produced with only 4:30 or 4:88's.

I know I've teased with Mattebury on his mileage because in fact I do get better or equal fuel economy with my 4:88's in my 450 as he does.

At face value you'd have to ask WTF! But, his commute/traffic/frustration is very much different from mine.

My miles have been more or less open road 2-4 lane, seldom less than 30 miles one way and little to no city driving (There ain't no cities..... ). Large amounts of that are also with the cruise engaged and rarely over 65 mph.

So yes, fuel economy is relative......ask the questions and understand the situation before assuming any combination is bad.

I think I was correct before in saying that Mattebury is a wildman though

 

It would help if you would add your vehicle description to your signature.

Crew cab?
4x4 ?
Automatic?

User CP or Quick Links in the blue bar at the top will get you the to a pull down for your signature...

Thanks for posting your mileage results as it will effect my next purchase decision.

Bob

 

I WISH!

If I could only know what it's like to stomp on it! I'd barely get into 3rd before having to stop at the next light.

 

No kidding, last time I was in SD going from Chula Vista about 5-10 miles to the Naval Station I was averaging 11-12 mpg in my Mustang. Normal city driving I could get close to 18-19.